> The onboard NIC on the AV8 is a VIA Velocity V6122
> (http://www.vntek.com/en/products/velocity/vt6122.jsp).

I just committed a NetBSD port of the original FreeBSD driver. Please
try it out and let me know if it works for you. Note it's tested with
standard packets (MTU 1500). There might be some bug in the code
handling JUMBO packets, I've observed some mbuf corruption when
testing larger MTUs.

Jaromir
-- 
Jaromir Dolecek <jdolecek@NetBSD.org>            http://www.NetBSD.cz/
-=- We can walk our road together if our goals are all the same;     -=-
-=- We can run alone and free if we pursue a different aim.          -=-