I have just tried with the ethernet board
00:14.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 08)
and it works fine with the 1.0.beta4.
Zeroshell correctly loads the e100.ko kernel module.
Post the output of the lspci and lsmod commands and ifconfig when the interface it is attached to a swhitch.