2 ip addresses on a single interface?

Discussion in 'Installation/Configuration' started by jeff.carrell, Mar 3, 2007.

  1. jeff.carrell

    jeff.carrell New Member

    is there a way to have 2 ip addresses on a single interface?

    i tried this:
    root@s3:~# cat /etc/network/interfaces

    # The primary network interface
    auto eth0
    iface eth0 inet static
    address 10.1.1.203
    netmask 255.255.255.0
    gateway 10.1.1.1
    dns-nameservers 206.176.129.2
    address 192.168.150.254
    netmask 255.255.255.0


    and the result when i restarted networking was:

    root@s3:~# /etc/init.d/networking restart
    * Reconfiguring network interfaces...
    /etc/network/interfaces:15: duplicate option
    ifdown: couldn't read interfaces file "/etc/network/interfaces"
    /etc/network/interfaces:15: duplicate option
    ifup: couldn't read interfaces file "/etc/network/interfaces"
    ...fail!

    do i need to configure sub-interfaces like on WAN router interfaces?

    thanx in advance...jeff
     
    jeff.carrell, Mar 3, 2007
    #1
  2. martinfst

    martinfst Member Moderator

    Here's an example that I use on my local system. Keep in mind that I run a local DNS server also.
    Code:
    # This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 172.16.3.75
        netmask 255.255.255.0
        network 172.16.3.0
        broadcast 172.16.3.255
        gateway 172.16.3.254
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 172.16.3.70
        dns-search tiempo.loc

auto eth0:0
iface eth0:0 inet static
        address 172.16.3.76
        netmask 255.255.255.0
        network 172.16.3.0
        broadcast 172.16.3.255
        gateway 172.16.3.254
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 172.16.3.70
        dns-search tiempo.loc
     
    martinfst, Mar 4, 2007
    #2

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