Reproducable panic with multicast on VLAN interface

[Hideki ONO]

Try my patch which I posted to freebsd-bugs last month.

http://lists.freebsd.org/pipermail/freebsd-bugs/2003-June/001407.html

> I have a problem with FreeBSD-4.8-STABLE in which the system panics when
> multicast definitions are being removed from an interface. The later is very 
> easily reproduced by killing zebra.
>
> This is a rather serious problem because it makes FreeBSD unusable as a VLAN
> router in a data center.

--
Hideki ONO