[wellylug] Sending traffic to a virtual interface

[Nic Cave-Lynch]

Adding a route to the desired host using the IP address of the aliased interface 
might work. I can't remember the syntax, but it's something like:

route add -host xx.yy.zz.ww dev eth0:0

I have a feeling this won't always work. I think I've tried it to get ssh to use 
a specific source address when communicating with a particular host, and it 
didn't work. But I might have a faulty memory. Actually, I know I have a faulty 
memory...

Nic

Cliff Pratt wrote:
> 
> How do you make an application use a particular interface to connect to 
> a particular IP address?
> 
> I have a machine with interfaces eth0, eth0:0, eth0:1, etc. I want 
> application A to use interface eth0:0 and not eth0 to communicate with 
> IP address xx.yy.zz.ww. There's no way to configure the application 
> itself to use a particular interface. Just the IP address.
> 
> I've a feeling that the answer is obvious....
> 
> Cheers,
> 
> Cliff
>