[PANIC] _rw_rlock (radix node head): wlock already held @ /usr/src/sys/net/route.c:291

[Goran Lowkrantz]

I upgraded to CURRENT Dec 12 11pm and get this panic when ifconfig tries to 
add an ipv6 route. I have not been able to get a dump and only screen 
console, so the boot messages, crash and backtrace is supplied in a series 
of jpegs avalable at 
<http://people.hidden-powers.com/~glz/panic-rwlock.zip>.

This crash is 100% and I can recreate it if there is more information 
needed.

/glz

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"There is hopeful symbolism in the fact that flags do not wave in a vacuum."
                -- Arthur C. Clarke