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#!/usr/local/bin/python3
# send a ping6 packet with routing header type 0
# the address pointer is at the final destination
# we expect a parameter problem from header scanning
print("send ping6 packet with routing header type 0 to the final destination")
import os
from addr import *
from scapy.all import *
eid=os.getpid() & 0xffff
payload=b"ABCDEFGHIJKLMNOP"
packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/\
IPv6ExtHdrRouting(addresses=[OTHER_FAKE1_ADDR6, OTHER_FAKE2_ADDR6], \
segleft=0)/\
ICMPv6EchoRequest(id=eid, data=payload)
eth=Ether(src=LOCAL_MAC, dst=REMOTE_MAC)/packet
if os.fork() == 0:
time.sleep(1)
sendp(eth, iface=LOCAL_IF)
os._exit(0)
ans=sniff(iface=LOCAL_IF, timeout=3, filter=
"ip6 and dst "+LOCAL_ADDR6+" and icmp6")
for a in ans:
if a and a.type == ETH_P_IPV6 and \
ipv6nh[a.payload.nh] == 'ICMPv6' and \
icmp6types[a.payload.payload.type] == 'Parameter problem':
pprob=a.payload.payload
code=pprob.code
print("code=%#d" % (code))
if code != 0:
print("WRONG PARAMETER PROBLEM CODE")
exit(2)
ptr=pprob.ptr
print("ptr=%#d" % (ptr))
if ptr != 42:
print("WRONG PARAMETER PROBLEM POINTER")
exit(2)
exit(0)
print("NO ICMP6 PARAMETER PROBLEM")
exit(1)
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