how tho change source address of eth0/eth0:1 ?

Hi,

I have an ethernet card with two IP-address (eth0 & eth0:1). When I verify
which IP-address is used as source it turns out eth0:1 and NOT eth0. Is it
possible to change this so that the source address is that of eth0 again?

Thanks,
Rene

news <(E-Mail Removed)> wrote:

> I have an ethernet card with two IP-address (eth0 & eth0:1). When I verify
> which IP-address is used as source it turns out eth0:1 and NOT eth0. Is it
> possible to change this so that the source address is that of eth0 again?

Why would you want to? This seems like a very broken thing to be doing.

This is not a trivial thing to do, although I suppose you could use SNAT
on packets going out eth0:1 and SNAT them to the source address of eth0

eth0_ip=1.2.3.4
eth0_1_ip=2.3.4.5

iptables -t nat -A POSTROUTING -o eth0:1 -j SNAT --to-source $eth0_ip

I don't know if this will work, but it's worth a shot. You may also need
to set up connection tracking.

--
Cameron Kerr
(E-Mail Removed) : http://nzgeeks.org/cameron/
Empowered by Perl!

"news" <(E-Mail Removed)> wrote in message news:<40c4547f$0$30374$(E-Mail Removed)4 all.nl>...
> Hi,
>
> I have an ethernet card with two IP-address (eth0 & eth0:1). When I verify
> which IP-address is used as source it turns out eth0:1 and NOT eth0. Is it
> possible to change this so that the source address is that of eth0 again?
>
> Thanks,
> Rene
I think that it depends on the interface the app. choose to send sout
packets. It may help to check you routing table.
Max