kern/122283: [ip6] [panic] Panic in ip_output related to IPv6 routes

[Pekka Savola]

Hi Nick,

I got hit by this after upgrading a dual-CPU system (6to4 relay) from 
6.3 to 7.0.  At the same time I enabled SMP.  I'm going to try to 
disable SMP but I don't know if it helps.

The backtrace seems somewhat similar, unfortunately I have less 
information than you do:

Tracing pid 12 tid 100003 td 0xc4d08880
ip_output(c5434700,0,c5001804,0,0,...) at ip_output+0x15c
stf_output(c4fd3c00,c5430a00,c08166c4,c51ced20,0,...) at 
stf_output+0x431
nd6_output(c4fd3c00,c4fd3c00,c5430a00,c08166c4,c51ced20,...) at 
nd6_output+0x70d
ip6_forward(c5430a00,0,10,1,0,...) at ip6_forward+0x88d
ip6_input(c5430a00,c058019e,1,93472,c4d08880,...) at ip6_input+0xd7e
netisr_processqueue(1,e0633985,202,1000000,c4d08880,...) at 
netisr_processqueue+0xcd
swi_net(0,0,c0788ef0,46b,0,...) at swi_net+0xbe
ithread_loop(c4cc58f0,e529dd38,0,0,0,...) at ithread_loop+0x1ab
fork_exit(c056d8e0,c4cc58f0,e529dd38) at fork_exit+0x99
fork_trampoline() at fork_trampoline+0x8

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings