Add missing man page descriptions for the following IPv6 sysctls:

-maxdynroutes
-maxifprefixes
-maxifdefrouters
-neighborgcthresh

OK from sthen@, claudio@ and henning@

2 files changed, 33 insertions, 4 deletions

diff --git a/lib/libc/gen/sysctl.3 b/lib/libc/gen/sysctl.3
index 9d6bfc39f72..cdf88e414a5 100644
--- a/lib/libc/gen/sysctl.3
+++ b/lib/libc/gen/sysctl.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sysctl.3,v 1.228 2014/01/21 03:15:45 schwarze Exp $
+.\"	$OpenBSD: sysctl.3,v 1.229 2014/04/19 12:42:50 logan Exp $
 .\"
 .\" Copyright (c) 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: January 21 2014 $
+.Dd $Mdocdate: April 19 2014 $
 .Dt SYSCTL 3
 .Os
 .Sh NAME
@@ -1676,11 +1676,15 @@ The currently defined protocols and names are:
 .It ip6 Ta hdrnestlimit Ta integer Ta yes
 .It ip6 Ta hlim Ta integer Ta yes
 .It ip6 Ta log_interval Ta integer Ta yes
+.It ip6 Ta maxdynroutes Ta integer Ta yes
 .It ip6 Ta maxfragpackets Ta integer Ta yes
 .It ip6 Ta maxfrags Ta integer Ta yes
+.It ip6 Ta maxifprefixes Ta integer Ta yes
+.It ip6 Ta maxifdefrouters Ta integer Ta yes
 .It ip6 Ta mforwarding Ta integer Ta yes
 .It ip6 Ta multicast_mtudisc Ta integer Ta yes
 .It ip6 Ta multipath Ta integer Ta yes
+.It ip6 Ta neighborgcthresh Ta integer Ta yes
 .It ip6 Ta redirect Ta integer Ta yes
 .It ip6 Ta rr_prune Ta integer Ta yes
 .It ip6 Ta use_deprecated Ta integer Ta yes
@@ -1834,6 +1838,11 @@ IPv6 packet forwarding engine.
 The value indicates the number of
 seconds of interval which must elapse between log output.
 .Pp
+.It Li ip6.maxdynroutes
+Maximum number of routes created by redirect.
+Set to negative to disable.
+The default value is 4096.
+.Pp
 .It Li ip6.maxfragpackets
 The maximum number of fragmented packets the node will accept.
 0 means that the node will not accept any fragmented packets.
@@ -1846,6 +1855,17 @@ The maximum number of fragments the node will accept.
 \-1 means that the node will accept as many fragments as it receives.
 The flag is provided basically for avoiding possible DoS attacks.
 .Pp
+.It Li ip6.maxifprefixes
+Maximum number of prefixes created by route advertisements per interface.
+Set to negative to disable.
+The default value is 16.
+.Pp
+.It Li ip6.maxifdefrouters 16
+Maximum number of default routers created by route advertisements per
+interface.
+Set to negative to disable.
+The default value is 16.
+.Pp
 .It Li ip6.mforwarding
 If set to 1, then multicast forwarding is enabled for the host.
 The default is 0.
@@ -1862,6 +1882,11 @@ This variable enables multipath routing for IPv6 addresses.
 If set to 0, only the first route selected will be used for a given
 destination regardless of how many routes exist in the routing table.
 .Pp
+.It Li ip6.neighborgcthresh
+Maximum number of entries in neighbor cache.
+Set to negative to disable.
+The default value is 2048.
+.Pp
 .It Li ip6.redirect
 Returns 1 when ICMPv6 redirects may be sent by the node.
 This option is ignored unless the node is routing IP packets,
diff --git a/sbin/sysctl/sysctl.8 b/sbin/sysctl/sysctl.8
index 0732216c7e5..e66c494a575 100644
--- a/sbin/sysctl/sysctl.8
+++ b/sbin/sysctl/sysctl.8
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sysctl.8,v 1.173 2013/10/28 21:02:35 deraadt Exp $
+.\"	$OpenBSD: sysctl.8,v 1.174 2014/04/19 12:42:50 logan Exp $
 .\"	$NetBSD: sysctl.8,v 1.4 1995/09/30 07:12:49 thorpej Exp $
 .\"
 .\" Copyright (c) 1993
@@ -30,7 +30,7 @@
 .\"
 .\"	@(#)sysctl.8	8.2 (Berkeley) 5/9/95
 .\"
-.Dd $Mdocdate: October 28 2013 $
+.Dd $Mdocdate: April 19 2014 $
 .Dt SYSCTL 8
 .Os
 .Sh NAME
@@ -301,10 +301,14 @@ and a few require a kernel compiled with non-standard
 .It net.inet6.ip6.use_deprecated Ta integer Ta yes
 .It net.inet6.ip6.rr_prune Ta integer Ta yes
 .It net.inet6.ip6.v6only Ta integer Ta no
+.It net.inet6.ip6.maxdynroutes Ta integer Ta yes
 .It net.inet6.ip6.maxfrags Ta integer Ta yes
+.It net.inet6.ip6.maxifprefixes Ta integer Ta yes
+.It net.inet6.ip6.maxifdefrouters Ta integer Ta yes
 .It net.inet6.ip6.mforwarding Ta integer Ta yes
 .It net.inet6.ip6.multipath Ta integer Ta yes
 .It net.inet6.ip6.multicast_mtudisc Ta integer Ta yes
+.It net.inet6.ip6.neighborgcthresh Ta integer Ta yes
 .It net.inet6.icmp6.rediraccept Ta integer Ta yes
 .It net.inet6.icmp6.redirtimeout Ta integer Ta yes
 .It net.inet6.icmp6.nd6_prune Ta integer Ta yes