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2002 May 03 09:05

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Re: [vox-tech] Multiple IPs on one system
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Re: [vox-tech] Multiple IPs on one system

On Friday 03 May 2002 08:48 am, Marc Hasbrouck wrote:
> I want to have server with two IP's on the same
> subnet. So far, my attemps with two NIC's don't work.
> To get any kind of connectivity, each NIC needs to
> talk to a differnt subnet.
> What I want to do it this:
> eth0 - dhcp to get my name isp's name servers from the
> firewall/dhcp server. No server service requests
> (Samba, NFS, or FTP) allowed in.
> eth1 - in the same subnet, but a fixed address outside
> the dhcp range with server services running against
> it.

It sounds to me like you're using one nic just to get the nameserver, why not 
just set it manualy?

Unless this a firewall, you can use just one NIC.

Linux has a nifty feature that allows a NIC to have multiple IP addresses, 
which can be quite useful. Just configure the interfaces eth0:0, eth0:1, etc.

Perhaps it would be easier to have your dhcp sevrer give a static IP based on 
the hardware address, below is a snippet of my dhcpd.conf that you can use.

An easy way to find your hardware address is by running `ifconfig` as root 
with no arguments

subnet netmask {
--- snip ----

    # fixed addresses handled by dhcp
        host mobile {
                next-server mobile;
                hardware ethernet 00:10:4B:9F:A2:F1;
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