panic: igmp_v3_dispatch_general_query: called when version 2

# kgdb kernel.debug /var/crash/vmcore.3
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Unread portion of the kernel message buffer:
panic: igmp_v3_dispatch_general_query: called when version 2
cpuid = 0
Uptime: 5h55m42s
Physical memory: 494 MB
Dumping 133 MB: (CTRL-C to abort)  118 (CTRL-C to abort)  (CTRL-C to 
abort)  102 (CTRL-C to abort)  86 70 54 (CTRL-C to abort)  38 (CTRL-C to 
abort)  22 (CTRL-C to abort)  (CTRL-C to abort)  6

Reading symbols from 
/boot/kernel.GENERIC.r191232.copyin2.debug/snd_es137x.ko...Reading 
symbols from 
/boot/kernel.GENERIC.r191232.copyin2.debug/snd_es137x.ko.symbols...done.
done.
Loaded symbols for /boot/kernel.GENERIC.r191232.copyin2.debug/snd_es137x.ko
Reading symbols from 
/boot/kernel.GENERIC.r191232.copyin2.debug/sound.ko...Reading symbols 
from /boot/kernel.GENERIC.r191232.copyin2.debug/sound.ko.symbols...done.
done.
Loaded symbols for /boot/kernel.GENERIC.r191232.copyin2.debug/sound.ko
Reading symbols from 
/boot/kernel.GENERIC.r191232.copyin2.debug/radeon.ko...Reading symbols 
from /boot/kernel.GENERIC.r191232.copyin2.debug/radeon.ko.symbols...done.
done.
Loaded symbols for /boot/kernel.GENERIC.r191232.copyin2.debug/radeon.ko
Reading symbols from 
/boot/kernel.GENERIC.r191232.copyin2.debug/drm.ko...Reading symbols from 
/boot/kernel.GENERIC.r191232.copyin2.debug/drm.ko.symbols...done.
done.
Loaded symbols for /boot/kernel.GENERIC.r191232.copyin2.debug/drm.ko
#0  doadump () at pcpu.h:246
246             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt
#0  doadump () at pcpu.h:246
#1  0xc08570ae in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:420
#2  0xc0857382 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:576
#3  0xc093e976 in igmp_fasttimo () at /usr/src/sys/netinet/igmp.c:3325
#4  0xc08b0739 in pffasttimo (arg=0x0) at 
/usr/src/sys/kern/uipc_domain.c:515
#5  0xc0869f8a in softclock (arg=0xc0d7c5c0) at 
/usr/src/sys/kern/kern_timeout.c:411
#6  0xc0835b45 in intr_event_execute_handlers (p=0xc35737ec, 
ie=0xc35a4280) at /usr/src/sys/kern/kern_intr.c:1134
#7  0xc08367af in ithread_loop (arg=0xc35721c0) at 
/usr/src/sys/kern/kern_intr.c:1147
#8  0xc08338f8 in fork_exit (callout=0xc0836710 <ithread_loop>, 
arg=0xc35721c0, frame=0xc3283d38) at /usr/src/sys/kern/kern_fork.c:821
#9  0xc0b47f70 in fork_trampoline () at 
/usr/src/sys/i386/i386/exception.s:270