To get DSL working for my ISP I have to do the following:[list=1][*]Get my network card working[*]Get dhcp client configured
I use dhcpcd, RH uses pump as the default (so I am told)[*]Connect to DSL modem[*]Obtain a dhcp lease. As root
Where ethN is your NIC (eth0, eth1...)
A.)The first time I connect with a new NIC I will get a 'private' IP address which allows me access to only the ISP's internal network. From there I can 'register' the MAC address of my NIC.
B.)Once I have registered the NIC I can reload the dhcp client and that will get me my 'real' Internet IP address.[*]Setup my networking to do this every time I boot.[/list=1]
If you are using pppoe, well, I have no clue. I looked into it and it's possible, but once I found out I didn't need it I lost interest.