Hi, While going through some of the commit logs, I noticed that sysctl didn't list ip6.mtudisctimeout.
Patch attached: Index: sbin/sysctl/sysctl.8 =================================================================== RCS file: /cvs/src/sbin/sysctl/sysctl.8,v retrieving revision 1.173 diff -u -p -u -p -r1.173 sysctl.8 --- sbin/sysctl/sysctl.8 28 Oct 2013 21:02:35 -0000 1.173 +++ sbin/sysctl/sysctl.8 2 Mar 2014 18:45:29 -0000 @@ -303,6 +303,7 @@ and a few require a kernel compiled with .It net.inet6.ip6.v6only Ta integer Ta no .It net.inet6.ip6.maxfrags Ta integer Ta yes .It net.inet6.ip6.mforwarding Ta integer Ta yes +.It net.inet6.ip6.mtudisctimeout 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.icmp6.rediraccept Ta integer Ta yes