[asterisk-dev] Feature request: Ability to assign which nic card or mac address to use for each trunk in sip.conf

[David Backeberg]

On Thu, May 28, 2009 at 4:08 AM, Kaloyan Kovachev <kkovachev at varna.net> wrote:
> If each trunk is using diferent router IP - you don't need any changes in
> Asterisk, but configuring the routing on the machine.
>
> Example:
>  trunk 1 uses src IP 1.1.1.1 on eth0 and router 2.2.2.2
>  trunk 2 uses src IP 1.1.1.2(but the same as on eth0 will also work) on eth1
> and router 2.2.2.3
>
> ip a a dev eth0 1.1.1.1
> ip a a dev eth1 1.1.1.2
> ip r a 2.2.2.2 dev eth0 src 1.1.1.1
> ip r a 2.2.2.3 dev eth1 src 1.1.1.2
>
> with this setup Asterisk will pickup the outgoing IP for each trunk properly

This is true, and you can of course make this dramatically more
complicated by adding more physical NICs, or virts on the same system,
or ethernet bridging techniques.

I second that you are trying to solve a solveable problem using a much
harder approach than what to me and the other poster is the obvious
solution already supported by asterisk.