Bug 17657

I only noticed this after the fact, but I guess it's reproducible.  It
seems that routed will segfault after about 5 minutes.  This was a
freshly installed 4.0-RELEASE system with the GENERIC kernel, before
I'd had a chance to finish cvsup'ing to 4.0-STABLE and re-compile the
kernel.

cannon-st:/home/local:# gdb -c /routed.core 
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This GDB was configured as "i386-unknown-freebsd".
Core was generated by `routed'.
Program terminated with signal 11, Segmentation fault.
#0  0x8050887 in ?? ()
(gdb) where
#0  0x8050887 in ?? ()
#1  0x80541bf in ?? ()
#2  0x804c209 in ?? ()
#3  0x80480f9 in ?? ()
(gdb) q

from /var/log/messages

[Booting as normal...]
Mar 28 11:40:39 cannon-st /kernel: ad0: 6485MB <Maxtor 90680D4> [13176/16/63] at
 ata0-master using UDMA33
Mar 28 11:40:39 cannon-st /kernel: acd0: CDROM <Pioneer CD-ROM ATAPI Model DR-74
4 0102> at ata1-master using PIO4
Mar 28 11:40:39 cannon-st /kernel: Mounting root from ufs:/dev/ad0s1a
Mar 28 11:40:39 cannon-st /kernel: de0: starting DAD for fe80:0001::02c0:f0ff:fe
1f:5c87
Mar 28 11:40:39 cannon-st /kernel: de0: DAD complete for fe80:0001::02c0:f0ff:fe
1f:5c87 - no duplicates found
Mar 28 11:40:34 cannon-st ntpdate[81]: step time server 192.168.122.3 offset -5.
210562 sec
Mar 28 11:40:45 cannon-st login: ROOT LOGIN (root) ON ttyv0
Mar 28 11:45:33 cannon-st routed[67]: rnh_deladdr() failed
Mar 28 11:45:33 cannon-st /kernel: pid 67 (routed), uid 0: exited on signal 11 (
core dumped)

Our local network is strictly IPv4 at the moment.

Fix: 

After stripping out "options INET6" from the kernel, routed appears to
be operating as advertised.
How-To-Repeat: 
/usr/sbin/routed -q