amd64/154134: stuck kernel state in LISTEN on ipv6 daemon which has
ggm at apnic.net
Wed Jan 19 04:50:08 UTC 2011
>Synopsis: stuck kernel state in LISTEN on ipv6 daemon which has been killed
>Arrival-Date: Wed Jan 19 04:50:07 UTC 2011
>Originator: George Michaelson
FreeBSD wattle.apnic.net 8.1-RELEASE-p2 FreeBSD 8.1-RELEASE-p2 #1: Tue Jan 18 01:06:10 UTC 2011 root at wattle.apnic.net:/usr/obj/usr/src/sys/GENERIC amd64
rsync --daemon not accepting v6 rsync calls. TCPDUMP shows packetflow syn/fin.
kill daemon, state left in kernel with netstat -an | grep 873.
add inetd entry tcp6. can't bind to port.
reboot, problem gone.
oddly, ssh and ping6 working, and I see a heap of nd6 neighbour discovery even though the two boxes 'knew' each other when this happened.
not sure I can. looks like sometimes, kernel state for listen() in v6 is stuck even if user process goes away.
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