Re: pcmcia ethernet cards

[Raph <raph@ding.hostns>]

aliasing an interface:

ifconfig IF:XX new_settings up

as in:

(eth0 already configured)
ifconfig eth0:0 192.168.2.1 network 192.168.2.255 broadcast 255.255.255.0 up

this will have eth0 as the usual interface, and eth0:0 pointing to the
same hardware nic, but with different network settings.

Have fun.

PS: your configuration, with one of the computers on a single LAN acting
as a gateway between two IP networks, works perfectly here, with only one 
nic per computer (afterall, this is what aliasing has been invented for)

PS2: another good solution would be to user a RIP daemon.