hello, i have almost the same problem, but the setup a little bit more clear. i have two pcs: PC1 and PC2; each has 2 net interfaces; pcs are interconnected by two crossover ethernet twisted pairs; cabling and net cards r ok and working. 10.0.1.0/24 +----------------------------------+ eth1 | 10.0.1.1 eth1 | 10.0.1.2 +-----+-----+ +-----+------+ | PC1 | | PC2 | | | | | +-----+-----+ +-----+------+ eth0 | 10.0.2.1 eth0 | 10.0.2.2 +----------------------------------+ 10.0.2.0/24 i need to use PC1 as a traffic generator for PC2 (to stresstest it). so what i need is that traffic goes: 10.0.1.1 -> 10.0.1.2 -> 10.0.2.2 -> 10.0.2.1 e.g. i want to have traffic sending application send it thru eth0/10.0.1.1 and traffic receiver listen at eth1/10.0.2.1 for now all the traffic gets routed locally, i.e. does not leave the PC1 i was expecting the problem, but thought it's possible to overcome it but playing with routing table entries. can u pls advise on this problem or point to the direction to study ? wbr, Denis. -- ("\''/").__..-''"`-. . denis.karpov@necsom.com `9_ 9 ) `-. ( ).`-._.`) Necsom Oy (_Y_.)' ._ ) `._`. " -.-' +358 (0)40 502 0931 _..`-'_..-_/ /-'_.' (l)-'' ((i).' ((!.' *** Lottery: A tax on people who are bad at math. *** - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org