Kernel panic from interface address list manipulation

[Nima Misaghian]

> Hey,
> 
> > I've been able to trivially
> > trigger a kernel panic while testing ifaddr list manipulation on -CURRENT (r
> > 211427).  The hardware is a four-core i386
> > machine with em interfaces.
> 
> The diff should give you an idea of what's going wrong.  I am not sure
> if I would want to actually commit it as-is.
> 
> http://people.freebsd.org/~bz/20100819-01-in_control.diff
> 

I could not reproduce the panic after applying the patch. Thanks for taking the time to look into this issue and fixing it.