Switch to scapy with python 3.

34 files changed, 376 insertions, 377 deletions

diff --git a/regress/sys/netinet6/frag6/LICENSE b/regress/sys/netinet6/frag6/LICENSE
index 5764ecdb0f9..866739d7ee3 100644
--- a/regress/sys/netinet6/frag6/LICENSE
+++ b/regress/sys/netinet6/frag6/LICENSE
@@ -1,13 +1,13 @@
-# Copyright (c) 2012-2019 Alexander Bluhm <bluhm@openbsd.org>
-#
-# Permission to use, copy, modify, and distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+Copyright (c) 2012-2020 Alexander Bluhm <bluhm@openbsd.org>
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/regress/sys/netinet6/frag6/Makefile b/regress/sys/netinet6/frag6/Makefile
index 7aae512b354..60bd2e1e1c0 100644
--- a/regress/sys/netinet6/frag6/Makefile
+++ b/regress/sys/netinet6/frag6/Makefile
@@ -1,15 +1,14 @@
-#	$OpenBSD: Makefile,v 1.26 2020/12/17 00:51:13 bluhm Exp $
+#	$OpenBSD: Makefile,v 1.27 2020/12/25 20:18:11 bluhm Exp $
 
 # The following ports must be installed:
 #
-# python-2.7          interpreted object-oriented programming language
 # scapy               powerful interactive packet manipulation in python
 
-.if ! exists(/usr/local/bin/python2.7) || ! exists(/usr/local/bin/scapy)
+.if ! exists(/usr/local/bin/scapy-3)
 .BEGIN:
 	@true
 regress:
-	@echo Install python and the scapy module for additional tests.
+	@echo Install py3-scapy package to run this regress.
 	@echo SKIPPED
 .endif
 
@@ -47,10 +46,10 @@ regress:
 
 .if make (regress) || make (all)
 .BEGIN:
-	@echo
 	${SUDO} true
 	ssh -t ${REMOTE_SSH} ${SUDO} true
 	rm -f stamp-stack stamp-pf
+	@echo
 .endif
 
 # Create python include file containing the addresses.
@@ -67,9 +66,9 @@ addr.py: Makefile
 # Set variables so that make runs with and without obj directory.
 # Only do that if necessary to keep visible output short.
 .if ${.CURDIR} == ${.OBJDIR}
-PYTHON =	python2.7 -u ./
+PYTHON =	python3 -u ./
 .else
-PYTHON =	PYTHONPATH=${.OBJDIR} python2.7 -u ${.CURDIR}/
+PYTHON =	PYTHONPATH=${.OBJDIR} python3 -u ${.CURDIR}/
 .endif
 
 stamp-stack:
diff --git a/regress/sys/netinet6/frag6/frag6.py b/regress/sys/netinet6/frag6/frag6.py
index e6a8b104135..44caeda1736 100644
--- a/regress/sys/netinet6/frag6/frag6.py
+++ b/regress/sys/netinet6/frag6/frag6.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "non-overlapping ping6 fragments"
+print("non-overlapping ping6 fragments")
 
 # |--------|
 #          |----|
@@ -11,13 +11,13 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -35,15 +35,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_ext.py b/regress/sys/netinet6/frag6/frag6_ext.py
index cb08a0eed60..06b487dae59 100644
--- a/regress/sys/netinet6/frag6/frag6_ext.py
+++ b/regress/sys/netinet6/frag6/frag6_ext.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragments with hop-by-hop extension header before fragment header"
+print("ping6 fragments with hop-by-hop extension header before fragment header")
 
 # E|---------|
 #           E|----|
@@ -11,13 +11,13 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/IPv6ExtHdrHopByHop()/f
@@ -35,15 +35,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_ext2long.py b/regress/sys/netinet6/frag6/frag6_ext2long.py
index 21215100b77..9c626adf337 100644
--- a/regress/sys/netinet6/frag6/frag6_ext2long.py
+++ b/regress/sys/netinet6/frag6/frag6_ext2long.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragments with long extension header in second fragment"
+print("ping6 fragments with long extension header in second fragment")
 
 # |FFFF|---------|
 # |HHHHHHHHHHHHHHHHHHHH|DDDD|FFFF|----|
@@ -11,15 +11,15 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 frag.append(IPv6ExtHdrHopByHop(options=PadN(optdata="\0"*28))/ \
     IPv6ExtHdrDestOpt()/ \
-    IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+    IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,15 +37,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_hop.py b/regress/sys/netinet6/frag6/frag6_hop.py
index a04ae7b4c5a..8a936e49591 100644
--- a/regress/sys/netinet6/frag6/frag6_hop.py
+++ b/regress/sys/netinet6/frag6/frag6_hop.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragments with missplaced hop-by-hop extension header"
+print("ping6 fragments with missplaced hop-by-hop extension header")
 
 # |HHHH----------|
 #                |----|
@@ -11,13 +11,13 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/IPv6ExtHdrHopByHop()/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=0, id=fid, m=1)/str(packet)[40:64])
-frag.append(IPv6ExtHdrFragment(nh=0, id=fid, offset=3)/str(packet)[64:72])
+frag.append(IPv6ExtHdrFragment(nh=0, id=fid, m=1)/bytes(packet)[40:64])
+frag.append(IPv6ExtHdrFragment(nh=0, id=fid, offset=3)/bytes(packet)[64:72])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -35,16 +35,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_maxlen.py b/regress/sys/netinet6/frag6/frag6_maxlen.py
index 70040b3ae29..bdfc8ee50a2 100644
--- a/regress/sys/netinet6/frag6/frag6_maxlen.py
+++ b/regress/sys/netinet6/frag6/frag6_maxlen.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "fully fragmented maximum size ping6 packet, sent in random order"
+print("fully fragmented maximum size ping6 packet, sent in random order")
 
 #          |----|
 #                                        |----|
@@ -17,17 +17,17 @@ pid=os.getpid()
 eid=pid & 0xffff
 iplen=2**16
 size=424
-payload="ABCDEFGHIJKLMNOP" * (iplen / 16)
+payload=b"ABCDEFGHIJKLMNOP" * int(iplen / 16)
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
-    ICMPv6EchoRequest(id=eid, data=str(payload)[0:iplen-8-1])
+    ICMPv6EchoRequest(id=eid, data=bytes(payload)[0:iplen-8-1])
 frag=[]
 fid=pid & 0xffffffff
-max=iplen/size
+max=int(iplen/size)
 for i in range(max):
 	frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1,
-	    offset=i*(size/8))/str(packet)[40+i*size:40+(i+1)*size])
+	    offset=i*int(size/8))/bytes(packet)[40+i*size:40+(i+1)*size])
 frag.append(IPv6ExtHdrFragment(nh=58, id=fid,
-    offset=max*(size/8))/str(packet)[40+max*size:])
+    offset=max*int(size/8))/bytes(packet)[40+max*size:])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -55,10 +55,10 @@ for a in ans:
 	    ipv6nh[a.payload.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		exit(0)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(1)
diff --git a/regress/sys/netinet6/frag6/frag6_maxpacket.py b/regress/sys/netinet6/frag6/frag6_maxpacket.py
index 23472889921..ce86b704a52 100644
--- a/regress/sys/netinet6/frag6/frag6_maxpacket.py
+++ b/regress/sys/netinet6/frag6/frag6_maxpacket.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "send ping6 fragment that ends behind ipv6 max packet size"
+print("send ping6 fragment that ends behind ipv6 max packet size")
 
 # IPV6_MAXPACKET                                           |
 # |--------|
@@ -13,14 +13,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=8191)/str(packet)[56:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=8191)/bytes(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -38,15 +38,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_maxpacket0.py b/regress/sys/netinet6/frag6/frag6_maxpacket0.py
index c1997fe6749..cc2b4fa0ddb 100644
--- a/regress/sys/netinet6/frag6/frag6_maxpacket0.py
+++ b/regress/sys/netinet6/frag6/frag6_maxpacket0.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "send first ping6 fragment that ends behind ipv6 max packet size"
+print("send first ping6 fragment that ends behind ipv6 max packet size")
 
 # IPV6_MAXPACKET                                           |
 #                                                      |----|
@@ -13,14 +13,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=8191)/str(packet)[56:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=8191)/bytes(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -38,15 +38,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_mf0atomic.py b/regress/sys/netinet6/frag6/frag6_mf0atomic.py
index 46c9d2fd015..4ea83385a72 100644
--- a/regress/sys/netinet6/frag6/frag6_mf0atomic.py
+++ b/regress/sys/netinet6/frag6/frag6_mf0atomic.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragments with an atomic fragment with mf=0 overlapping"
+print("ping6 fragments with an atomic fragment with mf=0 overlapping")
 
 # |---------|
 # |XXXX|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid)/str(packet)[40:48])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid)/bytes(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,15 +37,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(1)
diff --git a/regress/sys/netinet6/frag6/frag6_mf0long.py b/regress/sys/netinet6/frag6/frag6_mf0long.py
index b2dd9895b6e..85ea494873f 100644
--- a/regress/sys/netinet6/frag6/frag6_mf0long.py
+++ b/regress/sys/netinet6/frag6/frag6_mf0long.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment that overlaps longer than the last fragment with m=0"
+print("ping6 fragment that overlaps longer than the last fragment with m=0")
 
 #      |---------|
 #                |XXXX|
@@ -12,15 +12,15 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
-dummy="01234567"
+payload=b"ABCDEFGHIJKLMNOP"
+dummy=b"01234567"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/str(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/bytes(packet)[48:64])
 frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=3)/dummy)
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:48])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -38,16 +38,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_mf0middle.py b/regress/sys/netinet6/frag6/frag6_mf0middle.py
index 20d2dcc1e2b..a6f114b4cd0 100644
--- a/regress/sys/netinet6/frag6/frag6_mf0middle.py
+++ b/regress/sys/netinet6/frag6/frag6_mf0middle.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment with mf=0 that overlaps the first fragment"
+print("ping6 fragment with mf=0 that overlaps the first fragment")
 
 # |---------|
 #      |XXXX|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/str(packet)[48:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/bytes(packet)[48:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,16 +37,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_mf0short.py b/regress/sys/netinet6/frag6/frag6_mf0short.py
index a041abcac34..3a3b5633b83 100644
--- a/regress/sys/netinet6/frag6/frag6_mf0short.py
+++ b/regress/sys/netinet6/frag6/frag6_mf0short.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment with m=0 that overlaps the last fragment at beginning"
+print("ping6 fragment with m=0 that overlaps the last fragment at beginning")
 
 #           |---------|
 #      |XXXXXXXXX|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOPQRSTUVWX"
+payload=b"ABCDEFGHIJKLMNOPQRSTUVWX"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:72])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/str(packet)[48:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:72])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/bytes(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,16 +37,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_mf1end.py b/regress/sys/netinet6/frag6/frag6_mf1end.py
index bae5eed31ef..c8a2b6f17a8 100644
--- a/regress/sys/netinet6/frag6/frag6_mf1end.py
+++ b/regress/sys/netinet6/frag6/frag6_mf1end.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment with mf=1 that overlaps fragment with mf=0 at the end"
+print("ping6 fragment with mf=1 that overlaps fragment with mf=0 at the end")
 
 #           |----|
 #      |XXXXXXXXX|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/str(packet)[48:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/bytes(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,16 +37,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_opt.py b/regress/sys/netinet6/frag6/frag6_opt.py
index 1dc87ca94e5..e4c02c95bdc 100644
--- a/regress/sys/netinet6/frag6/frag6_opt.py
+++ b/regress/sys/netinet6/frag6/frag6_opt.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragments with fragmented destination option"
+print("ping6 fragments with fragmented destination option")
 
 # |OOOO|
 #      |OOOOOOOOOO--------------|
@@ -11,14 +11,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/IPv6ExtHdrDestOpt( \
     options=PadN(optdata='\0'*12)/PadN(optdata='\0'*6))/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=60, id=fid, m=1)/str(packet)[40:48])
-frag.append(IPv6ExtHdrFragment(nh=60, id=fid, offset=1)/str(packet)[48:88])
+frag.append(IPv6ExtHdrFragment(nh=60, id=fid, m=1)/bytes(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=60, id=fid, offset=1)/bytes(packet)[48:88])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -36,15 +36,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_overatomic.py b/regress/sys/netinet6/frag6/frag6_overatomic.py
index 3759db1312e..d5f9703d3cd 100644
--- a/regress/sys/netinet6/frag6/frag6_overatomic.py
+++ b/regress/sys/netinet6/frag6/frag6_overatomic.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "atomic fragment with offset=0 and more=0, it must be processed"
+print("atomic fragment with offset=0 and more=0, it must be processed")
 
 #      |XXXXXXXX|
 # |-------------|
@@ -11,14 +11,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
-dummy="0123456701234567"
+payload=b"ABCDEFGHIJKLMNOP"
+dummy=b"0123456701234567"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
 frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/dummy)
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid)/str(packet)[40:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid)/bytes(packet)[40:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -36,15 +36,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(1)
diff --git a/regress/sys/netinet6/frag6/frag6_overdrop.py b/regress/sys/netinet6/frag6/frag6_overdrop.py
index ac50b177764..8d57884f141 100644
--- a/regress/sys/netinet6/frag6/frag6_overdrop.py
+++ b/regress/sys/netinet6/frag6/frag6_overdrop.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment that overlaps the first fragment with the head"
+print("ping6 fragment that overlaps the first fragment with the head")
 
 # |---------|
 #      |XXXXXXXXX|
@@ -14,17 +14,17 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
-dummy="0123456701234567"
+payload=b"ABCDEFGHIJKLMNOP"
+dummy=b"0123456701234567"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/dummy)
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:48])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/str(packet)[48:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/bytes(packet)[48:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -42,15 +42,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(1)
diff --git a/regress/sys/netinet6/frag6/frag6_overhead.py b/regress/sys/netinet6/frag6/frag6_overhead.py
index c42da517bf0..9847cf793b9 100644
--- a/regress/sys/netinet6/frag6/frag6_overhead.py
+++ b/regress/sys/netinet6/frag6/frag6_overhead.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment that overlaps the second fragment with its head"
+print("ping6 fragment that overlaps the second fragment with its head")
 
 # |----|
 #      |----|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:48])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/str(packet)[48:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/str(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/bytes(packet)[48:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/bytes(packet)[48:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,16 +37,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_overhead0.py b/regress/sys/netinet6/frag6/frag6_overhead0.py
index 190e9177bf8..9d192d6c11e 100644
--- a/regress/sys/netinet6/frag6/frag6_overhead0.py
+++ b/regress/sys/netinet6/frag6/frag6_overhead0.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment that overlaps the first fragment with its head"
+print("ping6 fragment that overlaps the first fragment with its head")
 
 # |---------|
 #      |XXXX-----|
@@ -11,13 +11,13 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/str(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/bytes(packet)[48:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -35,16 +35,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_overhead1.py b/regress/sys/netinet6/frag6/frag6_overhead1.py
index 31483b1f09d..2f15e0db062 100644
--- a/regress/sys/netinet6/frag6/frag6_overhead1.py
+++ b/regress/sys/netinet6/frag6/frag6_overhead1.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment head that overlaps the first fragment completely"
+print("ping6 fragment head that overlaps the first fragment completely")
 
 # |---------|
 #      |XXXX|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/str(packet)[48:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/bytes(packet)[48:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,16 +37,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_overtail.py b/regress/sys/netinet6/frag6/frag6_overtail.py
index 4c6dba0fa9d..8c1556eb196 100644
--- a/regress/sys/netinet6/frag6/frag6_overtail.py
+++ b/regress/sys/netinet6/frag6/frag6_overtail.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment that overlaps the last fragment with its tail"
+print("ping6 fragment that overlaps the last fragment with its tail")
 
 #           |----|
 #      |XXXX|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/str(packet)[48:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/bytes(packet)[48:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,16 +37,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_overtail0.py b/regress/sys/netinet6/frag6/frag6_overtail0.py
index a627fe9de3b..c5b3ec0a49b 100644
--- a/regress/sys/netinet6/frag6/frag6_overtail0.py
+++ b/regress/sys/netinet6/frag6/frag6_overtail0.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment that overlaps the fist fragment with its tail"
+print("ping6 fragment that overlaps the fist fragment with its tail")
 
 #      |XXXX-----|
 # |---------|
@@ -11,13 +11,13 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/str(packet)[48:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/bytes(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -35,16 +35,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_overtail1.py b/regress/sys/netinet6/frag6/frag6_overtail1.py
index eb2460dc3c7..8807dd605b3 100644
--- a/regress/sys/netinet6/frag6/frag6_overtail1.py
+++ b/regress/sys/netinet6/frag6/frag6_overtail1.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment tail that overlaps the first fragment completely"
+print("ping6 fragment tail that overlaps the first fragment completely")
 
 #      |---------|
 #      |XXXX|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/str(packet)[48:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/str(packet)[48:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/bytes(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/bytes(packet)[48:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:48])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,16 +37,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_padding.py b/regress/sys/netinet6/frag6/frag6_padding.py
index 4ca8c073c28..b299f47bc3f 100644
--- a/regress/sys/netinet6/frag6/frag6_padding.py
+++ b/regress/sys/netinet6/frag6/frag6_padding.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "non-overlapping ping6 fragments with ethernet padding"
+print("non-overlapping ping6 fragments with ethernet padding")
 
 # |--------|XX|
 #          |----|XX|
@@ -11,17 +11,17 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
-padding="0123"
+payload=b"ABCDEFGHIJKLMNOP"
+padding=b"0123"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
-	pkt=str(IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f) + padding
+	pkt=bytes(IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f) + padding
 	eth.append(Ether(src=LOCAL_MAC, dst=REMOTE_MAC, type=0x86dd)/pkt)
 
 if os.fork() == 0:
@@ -36,15 +36,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_permute.py b/regress/sys/netinet6/frag6/frag6_permute.py
index de3973ef5ba..9ea015c6bb4 100644
--- a/regress/sys/netinet6/frag6/frag6_permute.py
+++ b/regress/sys/netinet6/frag6/frag6_permute.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "send 3 non-overlapping ping6 fragments in all possible orders"
+print("send 3 non-overlapping ping6 fragments in all possible orders")
 
 # |----|
 #      |----|
@@ -19,7 +19,7 @@ permute.append([1,2,0])
 permute.append([2,1,0])
 
 pid=os.getpid()
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 for p in permute:
 	pid += 1
 	eid=pid & 0xffff
@@ -28,11 +28,11 @@ for p in permute:
 	frag=[]
 	fid=pid & 0xffffffff
 	frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/
-	    str(packet)[40:48])
+	    bytes(packet)[40:48])
 	frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/
-	    str(packet)[48:56])
+	    bytes(packet)[48:56])
 	frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/
-	    str(packet)[56:64])
+	    bytes(packet)[56:64])
 	eth=[]
 	for i in range(3):
 		pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/frag[p[i]]
@@ -50,16 +50,16 @@ for p in permute:
 		    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 		    icmp6types[a.payload.payload.type] == 'Echo Reply':
 			id=a.payload.payload.id
-			print "id=%#x" % (id)
+			print("id=%#x" % (id))
 			if id != eid:
-				print "WRONG ECHO REPLY ID"
+				print("WRONG ECHO REPLY ID")
 				exit(2)
 			data=a.payload.payload.data
-			print "payload=%s" % (data)
+			print("payload=%s" % (data))
 			if data == payload:
 				break
-			print "PAYLOAD!=%s" % (payload)
+			print("PAYLOAD!=%s" % (payload))
 			exit(1)
 	else:
-		print "NO ECHO REPLY"
+		print("NO ECHO REPLY")
 		exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_queuelimit.py b/regress/sys/netinet6/frag6/frag6_queuelimit.py
index 8f14522f6bd..07c69ce2eb3 100644
--- a/regress/sys/netinet6/frag6/frag6_queuelimit.py
+++ b/regress/sys/netinet6/frag6/frag6_queuelimit.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "drop too long fragment queue, reassemble less fragments"
+print("drop too long fragment queue, reassemble less fragments")
 
 # |----|
 #      |----|
@@ -14,7 +14,7 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP" * 70
+payload=b"ABCDEFGHIJKLMNOP" * 70
 frag=[]
 fid=pid & 0xffffffff
 # send packets with 65 and 64 fragments
@@ -25,9 +25,9 @@ for max in (64, 63):
 	fid = ~fid & 0xffffffff
 	for i in range(max):
 		frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1,
-		    offset=i)/str(packet)[40+i*8:40+(i+1)*8])
+		    offset=i)/bytes(packet)[40+i*8:40+(i+1)*8])
 	frag.append(IPv6ExtHdrFragment(nh=58, id=fid,
-	    offset=max)/str(packet)[40+max*8:])
+	    offset=max)/bytes(packet)[40+max*8:])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -52,20 +52,20 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id == ~eid & 0xffff:
-			print "ECHO REPLY FROM 65 FRAGMENTS"
+			print("ECHO REPLY FROM 65 FRAGMENTS")
 			exit(1)
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data != payload:
-			print "PAYLOAD!=%s" % (payload)
+			print("PAYLOAD!=%s" % (payload))
 			exit(2)
 		reply=True
 if not reply:
-	print "NO ECHO REPLY FROM 64 FRAGMENTS"
+	print("NO ECHO REPLY FROM 64 FRAGMENTS")
 	exit(1)
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_refrag.py b/regress/sys/netinet6/frag6/frag6_refrag.py
index 61f6dff4711..ebcdfb0171e 100644
--- a/regress/sys/netinet6/frag6/frag6_refrag.py
+++ b/regress/sys/netinet6/frag6/frag6_refrag.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "fragments of a large packet that has to be refragmented by reflector"
+print("fragments of a large packet that has to be refragmented by reflector")
 
 # |--------|
 #          |------------------|
@@ -14,22 +14,22 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload=100 * "ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP" * 100
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
-request_cksum=ICMPv6Unknown(str(packet.payload)).cksum
-print "request cksum=%#x" % (request_cksum)
+request_cksum=ICMPv6Unknown(bytes(packet.payload)).cksum
+print("request cksum=%#x" % (request_cksum))
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 offset=2
 chunk=4
 while 40+8*(offset+chunk) < len(payload):
 	frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=offset, m=1)/
-	    str(packet)[40+(8*offset):40+8*(offset+chunk)])
+	    bytes(packet)[40+(8*offset):40+8*(offset+chunk)])
 	offset+=chunk
 frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=offset)/
-    str(packet)[40+(8*offset):])
+    bytes(packet)[40+(8*offset):])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -49,17 +49,17 @@ for a in ans:
 	    ipv6nh[a.payload.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		reply_cksum=a.payload.payload.payload.cksum
-		print "reply cksum=%#x" % (reply_cksum)
+		print("reply cksum=%#x" % (reply_cksum))
 		# change request checksum incrementaly and check with reply
 		diff_cksum=~(~reply_cksum+~(~request_cksum+~0x8000+0x8100))
 		if diff_cksum & 0xffff != 0xffff and diff_cksum & 0xffff != 0:
-			print "CHECKSUM ERROR diff cksum=%#x" % (diff_cksum)
+			print("CHECKSUM ERROR diff cksum=%#x" % (diff_cksum))
 			exit(1)
 		exit(0)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_shortatomic.py b/regress/sys/netinet6/frag6/frag6_shortatomic.py
index 7df4e1e35ab..e6548b2fc52 100644
--- a/regress/sys/netinet6/frag6/frag6_shortatomic.py
+++ b/regress/sys/netinet6/frag6/frag6_shortatomic.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "fragment with dest option and atomic fragment without protocol header"
+print("fragment with dest option and atomic fragment without protocol header")
 
 # |-IP-|-Frag-|-ExtDest-|-ICMP6-|-pay|
 # |-- atomic fragment --|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/IPv6ExtHdrDestOpt()/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=60, id=fid, m=1)/str(packet)[40:64])
-frag.append(IPv6ExtHdrFragment(nh=60, id=fid)/str(packet)[40:48])
-frag.append(IPv6ExtHdrFragment(nh=60, id=fid, offset=3)/str(packet)[64:72])
+frag.append(IPv6ExtHdrFragment(nh=60, id=fid, m=1)/bytes(packet)[40:64])
+frag.append(IPv6ExtHdrFragment(nh=60, id=fid)/bytes(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=60, id=fid, offset=3)/bytes(packet)[64:72])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,15 +37,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(1)
diff --git a/regress/sys/netinet6/frag6/frag6_timeout.py b/regress/sys/netinet6/frag6/frag6_timeout.py
index 63488b16182..7b88986db58 100644
--- a/regress/sys/netinet6/frag6/frag6_timeout.py
+++ b/regress/sys/netinet6/frag6/frag6_timeout.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "6 non-overlapping ping6 fragments in 75 seconds, timeout is 60"
+print("6 non-overlapping ping6 fragments in 75 seconds, timeout is 60")
 
 # |----|
 #      |----|
@@ -15,17 +15,17 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcd"
+payload=b"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcd"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:48])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/str(packet)[48:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2, m=1)/str(packet)[56:64])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=3, m=1)/str(packet)[64:72])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=4, m=1)/str(packet)[72:80])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=5)/str(packet)[80:88])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1, m=1)/bytes(packet)[48:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2, m=1)/bytes(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=3, m=1)/bytes(packet)[64:72])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=4, m=1)/bytes(packet)[72:80])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=5)/bytes(packet)[80:88])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -45,16 +45,16 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
-			print "ECHO REPLY"
+			print("ECHO REPLY")
 			exit(1)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "no echo reply"
+print("no echo reply")
 exit(0)
diff --git a/regress/sys/netinet6/frag6/frag6_udpatomic.py b/regress/sys/netinet6/frag6/frag6_udpatomic.py
index c4e3879dcad..ee681acb9c4 100644
--- a/regress/sys/netinet6/frag6/frag6_udpatomic.py
+++ b/regress/sys/netinet6/frag6/frag6_udpatomic.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "atomic udp fragment"
+print("atomic udp fragment")
 
 # |-------------|
 
@@ -13,12 +13,12 @@ uport=pid & 0xffff
 # inetd ignores UDP packets from privileged port or nfs
 if uport < 1024 or uport == 2049:
 	uport+=1024
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     UDP(sport=uport, dport=7)/payload
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=17, id=fid)/str(packet)[40:64])
+frag.append(IPv6ExtHdrFragment(nh=17, id=fid)/bytes(packet)[40:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -36,15 +36,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'UDP' and \
 	    a.payload.payload.sport == 7:
 		port=a.payload.payload.dport
-		print "port=%d" % (port)
+		print("port=%d" % (port))
 		if port != uport:
-			print "WRONG UDP ECHO REPLY PORT"
+			print("WRONG UDP ECHO REPLY PORT")
 			exit(2)
 		data=a.payload.payload.load
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO UDP ECHO REPLY"
+print("NO UDP ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_udpheader.py b/regress/sys/netinet6/frag6/frag6_udpheader.py
index f56e1a669d5..2c728c37591 100644
--- a/regress/sys/netinet6/frag6/frag6_udpheader.py
+++ b/regress/sys/netinet6/frag6/frag6_udpheader.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "udp fragments splitted after udp header"
+print("udp fragments splitted after udp header")
 
 # |----|
 #      |--------|
@@ -14,13 +14,13 @@ uport=pid & 0xffff
 # inetd ignores UDP packets from privileged port or nfs
 if uport < 1024 or uport == 2049:
 	uport+=1024
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     UDP(sport=uport, dport=7)/payload
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=17, id=fid, m=1)/str(packet)[40:48])
-frag.append(IPv6ExtHdrFragment(nh=17, id=fid, offset=1)/str(packet)[48:64])
+frag.append(IPv6ExtHdrFragment(nh=17, id=fid, m=1)/bytes(packet)[40:48])
+frag.append(IPv6ExtHdrFragment(nh=17, id=fid, offset=1)/bytes(packet)[48:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -38,15 +38,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'UDP' and \
 	    a.payload.payload.sport == 7:
 		port=a.payload.payload.dport
-		print "port=%d" % (port)
+		print("port=%d" % (port))
 		if port != uport:
-			print "WRONG UDP ECHO REPLY PORT"
+			print("WRONG UDP ECHO REPLY PORT")
 			exit(2)
 		data=a.payload.payload.load
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO UDP ECHO REPLY"
+print("NO UDP ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_udppayload.py b/regress/sys/netinet6/frag6/frag6_udppayload.py
index cc4a995f549..70f91856fd7 100644
--- a/regress/sys/netinet6/frag6/frag6_udppayload.py
+++ b/regress/sys/netinet6/frag6/frag6_udppayload.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "udp fragments with splitted payload"
+print("udp fragments with splitted payload")
 
 # |--------|
 #          |----|
@@ -14,13 +14,13 @@ uport=pid & 0xffff
 # inetd ignores UDP packets from privileged port or nfs
 if uport < 1024 or uport == 2049:
 	uport+=1024
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     UDP(sport=uport, dport=7)/payload
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=17, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=17, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=17, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=17, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -38,15 +38,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'UDP' and \
 	    a.payload.payload.sport == 7:
 		port=a.payload.payload.dport
-		print "port=%d" % (port)
+		print("port=%d" % (port))
 		if port != uport:
-			print "WRONG UDP ECHO REPLY PORT"
+			print("WRONG UDP ECHO REPLY PORT")
 			exit(2)
 		data=a.payload.payload.load
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(1)
-print "NO UDP ECHO REPLY"
+print("NO UDP ECHO REPLY")
 exit(2)
diff --git a/regress/sys/netinet6/frag6/frag6_zerofirst.py b/regress/sys/netinet6/frag6/frag6_zerofirst.py
index b739ae33aa6..83dd31ff8ec 100644
--- a/regress/sys/netinet6/frag6/frag6_zerofirst.py
+++ b/regress/sys/netinet6/frag6/frag6_zerofirst.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment without payload with other proto before first fragment"
+print("ping6 fragment without payload with other proto before first fragment")
 
 # ||
 # |---------|
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
 frag.append(IPv6ExtHdrFragment(nh=59, id=fid, m=1))
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,15 +37,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(1)
diff --git a/regress/sys/netinet6/frag6/frag6_zerosecond.py b/regress/sys/netinet6/frag6/frag6_zerosecond.py
index 63b2d4ebd6b..44e9d5f1bab 100644
--- a/regress/sys/netinet6/frag6/frag6_zerosecond.py
+++ b/regress/sys/netinet6/frag6/frag6_zerosecond.py
@@ -1,6 +1,6 @@
-#!/usr/local/bin/python2.7
+#!/usr/local/bin/python3
 
-print "ping6 fragment without payload with other proto after first fragment"
+print("ping6 fragment without payload with other proto after first fragment")
 
 # |---------|
 # ||
@@ -12,14 +12,14 @@ from scapy.all import *
 
 pid=os.getpid()
 eid=pid & 0xffff
-payload="ABCDEFGHIJKLMNOP"
+payload=b"ABCDEFGHIJKLMNOP"
 packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
     ICMPv6EchoRequest(id=eid, data=payload)
 frag=[]
 fid=pid & 0xffffffff
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/str(packet)[40:56])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56])
 frag.append(IPv6ExtHdrFragment(nh=59, id=fid, m=1))
-frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/str(packet)[56:64])
+frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64])
 eth=[]
 for f in frag:
 	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
@@ -37,15 +37,15 @@ for a in ans:
 	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
 	    icmp6types[a.payload.payload.type] == 'Echo Reply':
 		id=a.payload.payload.id
-		print "id=%#x" % (id)
+		print("id=%#x" % (id))
 		if id != eid:
-			print "WRONG ECHO REPLY ID"
+			print("WRONG ECHO REPLY ID")
 			exit(2)
 		data=a.payload.payload.data
-		print "payload=%s" % (data)
+		print("payload=%s" % (data))
 		if data == payload:
 			exit(0)
-		print "PAYLOAD!=%s" % (payload)
+		print("PAYLOAD!=%s" % (payload))
 		exit(2)
-print "NO ECHO REPLY"
+print("NO ECHO REPLY")
 exit(1)