I would like to know how to load balance two network segments with source routing, yet at the same time still use a transparent proxy.

Scenario as follow:

Customers A segment = 192.168.10.0/24
Customers B segment = 192.168.20.0/24

Customers A + B <-> Mikrotik <-> Two DSL Lines called #1 and #2.

MT performs "mark routing" on "pre-routing" chain per segment, and then based on "routing mark" directs via default DSL gateway 1# or 2#.

Now I put transparent proxy on MT. Problem is now source address of Customer Segments become source address as specified in proxy configuration and I cannot direct segment traffic to specific gateway.

Does anyone have some ideas?

You can get rid of the marks and load balance all traffic over the 2 DSL's with 1 default route. gateway=192.168.10.x,192.168.20.x

You can leave the marks and specify a 3rd gateway for all the proxy traffic, also over both lines. So Network A !80 DSL1, Network B !80 DSL2, Network A&B 80 DSL1&DSL2.

If you cannot have any A or B traffic crossing onto the others DSL, I have no idea how with a proxy.

ECMP breaks my downloads and I really would like to use a transparent proxy server...