Re: Ip Aliasing the Debian Way...

[Willy Lee <willy.lee@page44.com>]

On Wed, 17 Jan 2001, Ethan Benson wrote:

> 
> just add something like this to /etc/network/interfaces:
> 
> iface eth0:0 inet static
>         address 192.168.0.1
>         netmask 255.255.255.0
>         network 192.168.0.0
>         broadcast 192.168.0.255
>         gateway 192.168.0.10
> 
> then run either /etc/init.d/networking restart or ifup eth0:0
> 

Hm.  This doesn't work for me (latest potato i386).  Here's the stanza I
add to /etc/network/interfaces (all values given to me by an admin):

iface eth0:0 inet static
        address the.new.ip.adr
        netmask 255.255.255.192
        gateway the.new.ip.gw
        broadcast the.new.ip.255

After running /etc/init.d/networking restart, I get this from ifconfig:

willy@trs80:~$ /sbin/ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:10:5A:9C:8B:BF  
          inet addr:10.0.0.102  Bcast:10.255.255.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:279 errors:0 dropped:0 overruns:0 frame:0
          TX packets:107 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          Interrupt:11 Base address:0xd000 

eth0:0    Link encap:Ethernet  HWaddr 00:10:5A:9C:8B:BF  
          inet addr:the.new.ip.adr  Bcast:the.new.ip.255 
Mask:255.255.255.192
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:11 Base address:0xd000 

Note that the :0 alias doesn't have lines beginning with "RX packets" or
"TX packets".  I can't ping the.new.ip.adr either, from anywhere.

I recompiled the kernel to turn on IP_ALIAS support.  Is there another
feature I need to turn on, that I perhaps missed?  Is the feature
limited to certain hardware?  Is it limited to certain subnet masks?

It's like magic, this *just* came up out of the blue at work! :)

Please cc me, so I can get the email at work, where I need it :)

=wl