panic: if_attach called without if_alloc'd input()

[Darcy Buskermolen]

I'm getting the following panic on my RELENG_6 test box:

xl1f0: BUG: if_attach called without if_alloc'd input()

Where should I be looking to track this down? I suspect it has to do with a 
custom kernel, it wasn't doing it when i was running GENERIC

-- 
Darcy Buskermolen
Wavefire Technologies Corp.

http://www.wavefire.com
ph: 250.717.0200
fx: 250.763.1759