Network renumbering

["Rodolfo J. Paiz" <rpaiz indahaus com>]

Hi!

I'm moving my servers to a new network (same provider), so for a while I 
need to have two IP addresses for each server on the same interface and 
with the same services on both. Two questions:

1) Would I make one interface eth0 and the other eth0:0? Or, since I'm 
using virtual interfaces, do I cease to use eth0 totally and instead use 
eth0:0 and eth0:1? Or does it matter at all?

2) I have a huge script that sets up all my firewall rules. Now I need two 
runs through the script, one for each IP address (they will offer identical 
services). Is the following syntax correct?

for IPADDR in 111.111.111.111 222.222.222.222 ; do {
        ipchains -A input -i eth0 -p tcp  -d $IPADDR -j ACCEPT
        ipchains -A input -i eth0 -p udp  -d $IPADDR -j ACCEPT
        ipchains -A input -i eth0 -p icmp -d $IPADDR -j ACCEPT
        }
done

Thanks so much...


--
Rodolfo J. Paiz
rpaiz indahaus com