Prioritize traffic over a specific interface

[BrunoMarques21]

Good afternoon everyone!

I have 2 internet links.

I enabled the load balance between the 2 internet links

Now I'm having a problem with voip.

My pabx needs to declare the public IP of my provider.

So when the connection comes through the eth2 link and comes back through the eth2 everything works fine.

But with the load balance 50% 50%, sometimes the traffic comes through eth2 and is returned by eth1.

With that ends up not working the voip.

How to force the pabx traffic to always be returned on eth2 and not on eth1?

[Chris_Atkinson]

For outgoing traffic you have static routes or PBR depending on how specific you need to be.