Note, this is a cross-post from/to linux-vs mailing list Here is the setup: (monospace font required) ___ +----+ ___ / |VMR1| \ / +----+ \ / +----+ \ A(lice)------------LB-A------ |VMR2| ------LB-B------------B(ob) \ +----+ / \ +----+ / \___ |VMRn| ___/ +----+ A - client, B- server , LB-(A|B) - loadbalancer(Linux-VS), VMR - blackboxes. The VMR - voice mail routers or bridges or call whatever you want, are blackboxes,which means I can not modfiy anything. It's a TCP/IP traffic, that flows there. Here is the problem: when A sends B a packet, it passes trough a VMR, then to B. The reply should go trough the same VMR trough which came the A's packet. Imagine something like a "virtual circuit" or such. This requires, as i figured,to sync the sessions between the LB-A and LB-B. I am willing to write a patch to LVS to do it. I would like to hear possible problems/solutions and such. -- Yay! I've got a flying machine! (UNIX)