MPTCP is a emerging protocol that is able to split one TCP session over multiple links. In order to do that the source and destination have to be MPTCP capable.

I have configured MPTCP on a linux machine following the rules,http://multipath-tcp.org/pmwiki.php/...nfigureRouting, and can achieve a shared tcp flow over 2 gateways when i do a iperf measurement to multipath-tcp.org (MPTCP capable server).

However i can only achieve this if the source of traffic is inside the linux machine that have mptcp installed. If i have a PC connected to MPTCP machine, the tcp flow only flows in one gateway.

I have a LAN interface, eth2, what should i do to the PCs connected to eth2 can benefit from mptcp? I want to run iperf on a PC connected to MPTCP machine and benefit of a shared tcp flow over 2 gateways.

I have masquerade eth0 and eth1 , could the NAT be messing with this?

Thank you in advance.