Nick <nbdy9@hotmail.com.nospam> wrote in message news:<bu42mq$dls$1@news3.bu.edu>...
> I have a cable modem/router which have a built-in dhcp server. I have a
> route PC with multiple network cards connecting to the cable modem and
> other PCs connect to the route PC.
>
> How to let other PCs get the dhcp address from the cable modem?

The network interface connecting to the cable modem should be running
dhcp client, for example: dhcpcd eth0 (assuming eth0 is to the cable
modem). The second interface should be running dhcp server, for
example: dhcpd -i eth1, serving a local subnet. Other PCs are then
dhcp clients to this local subnet.

see: http://ide-cf.info-for.us/firewall.html

>
> Thanks.