[gentoo-embedded] arm router with 3 ports

[wireless]

Hello,

I'm looking for an arm based router that easily runs
embedded gentoo with at least 3 (100 Mbps speed ok) ethernet
ports.

I'm going to get 3 to teach a couple of teenagers (oh boy)
how to build and maintain their own router. Sooooooo any
suggestions that simply this embedded gentoo effort, are
most welcome. Raw iptables is what I'm use to using.
A wireless port would be good but not required.



James