gw5@makoto 08:17:01/251122(/export/core)% sudo crash -M netbsd.1.core -N netbsd.1
Crash version 9.4, image version 9.4.
System panicked: trap
Backtrace from time of crash is available.
crash> bt
_KERNEL_OPT_NARCNET() at 0
?() at ffffdd0067558000
vpanic() at vpanic+0x169
snprintf() at snprintf
startlwp() at startlwp
calltrap() at calltrap+0x11
mutex_vector_enter() at mutex_vector_enter+0x91
ipf_nat_delete() at ipf_nat_delete+0x1b6
ipf_nat_flush_entry() at ipf_nat_flush_entry+0xe
ipf_queueflush() at ipf_queueflush+0x13d
ipf_nat_expire() at ipf_nat_expire+0x19b
ipf_slowtimer() at ipf_slowtimer+0x29
ipf_timer_func() at ipf_timer_func+0x2d
callout_softclock() at callout_softclock+0x281
softint_dispatch() at softint_dispatch+0xab
DDB lost frame for Xsoftintr+0x4f, trying 0xffffdd006755b0f0
Xsoftintr() at Xsoftintr+0x4f
--- interrupt ---
0:
crash>