external squid proxy ...ZPH patched

Any one succeded with external Squid proxy patched with ZPH patch ?

I’m using Squid 2.6 stable16 patched
setting the zph_tos_local 0x30

I cant mark all HIT trafic at the router os using dscp = 12 !!!
trying prerouting , postrouting … same result …

no one succeded ??

I’ve been heard that the squid3 was already included ZPH feature so that no more needed ZPH configuration for external proxy server.
If you have below than squid version 3, you’d better upgrade to squid3