IPfilter panic in 7.1

[manu%netbsd.org@localhost (Emmanuel Dreyfus)]

Hi

I am hit by frequent IPfilter panics on a firewall setup after upgrading
to 7.1. Is it something someone else experienced? 

fatal page fault in supervisor mode
trap type 6 code 2 eip c0274d42 cs 8 eflags 210202 cr2 e ilevel 2 esp
c571de84
curlwp 0xc50bf540 pid 0 lid 5 lowest kstack 0xdca662c0
panic: trap
cpu0: Begin traceback...
vpanic(c04e1852,dca67e8c,dca67eec,c037946e,c04e1852,6,0,de1,
    c50b3700,de1) at netbsd:vpanic+0x157
snprintf(c04e1852,6,0,de1,c50b3700,de1,c0257504,c571de84,2,6) at 
    netbsd:snprintf
trap() at netbsd:trap+0x250
--- trap (number 6) ---
ipf_frag_delete(c546b2dc,c571ded4,c2daa1cc,c2daa220,c2db1d60,dca67f74,
    c01e34cc,c2daa1cc,c2daa234,c2daa1cc) at netbsd:ipf_frag_delete+0x18
ipf_frag_expire(c2daa1cc,c2daa234,c2daa1cc,dca67f88,c02737d7,c2daa1cc,
    c02737b3,c2daa1cc,dca67fb0,c02bdfeb) at netbsd:ipf_frag_expire+0x4e
ipf_slowtimer(c2daa1cc,c02737b3,c2daa1cc,dca67fb0,c02bdfeb,c2daa1cc,1,d,
    c2db1d64,c2db1dc0) at netbsd:ipf_slowtimer+0x13
ipf_timer_func(c2daa1cc,1,d,c2db1d64,c2db1dc0,c50bf540,dca601f4,dca6007,
    dca67fe0,c02b6897) at netbsd:ipf_timer_func+0x24
callout_softclock(0,0,0,0,8,0,c05868c0,0,c57ee020,c50bf540) at 
    netbsd:callout_softclock+0x1cd
softint_dispatch(c57ee020,2,0,0,0,0,dca69ff0,dca69f88,c50bf2a0,80050033)
    at netbsd:softint_dispatch+0xb9


-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu%netbsd.org@localhost