I'm just trying kernel 2.6.30-gentoo-r6 and having the same trouble I had
with 2.56.30-r4, so now I need to ask if I'm alone in this.

I copied my .config from my 2.6.28-gentoo-r5, did "make oldconfig" and took
the default action on everything (none of which seemed related to this
problem).  It boots okay and recognizes everything except my network
interfaces (on the motherboard, but they're Intel chipset thingies:)

Here's what "lspci" says about them on the good kernel:

07:02.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro
100 (rev 0d)
07:03.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro
100 (rev 0d)

The 2.6.30-gentoo-r6 kernel does not bring them up, and a manual attempt to
do so in /etc/init.d errors out with a claim the interfaces do not exist.

Anybody else seen this or can give guidance?

-- 
Kevin O'Gorman, PhD