Linknx and eibd have been reported to run on the following platforms (feel free to add yours if it's not listed):
Linksys WRT54G (OpenWRT Kamikaze)
Linksys WRT54GS v4 (OpenWRT WhiteRussian and Kamikaze)
Asus WL500GP (OpenWRT Kamikaze)
Linksys NSLU2 (Optware)
Freecom FSG3 (Optware)
Synology DS101 (Optware)