panic related to in_output.c

Code from yesterday evening (11/10 around 5PM EST). Just updated this
morning. I saw no updates to ip_output.c but there were changes to a couple
of other files in sys/netinet so figured I'd give it a whirl...

panic: mutex inp not owned at /usr/src/sys/netinet/ip_output.c:218
cpuid= -;
Debugger("panic")
Stopped at	Debugger+0x55:	xchgl	%ebx,in_Deubbger,0
db>

-Steve