I encountered the same thing when I tried to use DHCP. (My DHCP server at home is an Apple Airport...hey, it was there and it was easier than writing a dhcpd.conf file for the Linux box.)
The console messages showed a DISCOVER sent, an OFFER received, and a REQUEST sent, but no ACK from the Airport, therefore no address on the empeg.
There's something about the DISCOVER from the empeg that the DHCP servers don't like, but I haven't hooked up the sniffer at home yet.
-Zandr
Mk.I #150
Mk.II #39
_________________________
-Zandr
Mk.IIa #010101243 currently getting a 500GB SSD. More spares in the shed.