[KLUG Members] eth0:avah

[Robert G. Brown]

On Thu, 21 Jun 2007 09:36:57 -0400, Eric Beversluis wrote:

>When I run ifconig on my Ubuntu Feisty Fawn, I see eth0 and eth1, but
>also eth0:avah, which has the same HWaddr as eth0.
  
>I find lots of references to 'eth0:avah' from Google, but none seems to
>say what it is.

Yes, this is an IP ALIAS for the same bit of hardware.

In essence, a single phyical ethernet port can have multiple IP addresses 
assigned to it. The address is "bound" (or associated) with an extended device 
name, the stuff after the colon is the variable part of the address, and the
base device name is to the left of the colon.
eth0, eth0:1 and eth0:avah all refer to the same phyciscal port (or RJ-45 
socket) on the machine, but they are bound to different IP addresses.

							Regards,
							---> RGB <---