On Sun, Aug 15, 2010 at 10:50:17AM +0300, Or Gerlitz wrote: > the echo requests go on the wire, the replies not, probably (...) > internally, Patrick?
What all these settings do is let a socket that is bound to a device resolve the local host's address through ARP. The socket that is bound to a device will then use its device for sending, but other sockets not bound to devices will do route lookups and use the lo device. Do: ip route get 192.168.20.100 dev ib0 ip route get 192.168.20.1 src 192.168.20.100 To see the difference in each side. To really effect a full external loopback you need to have both sides bound to their respective devices. Note that binding to a device and binding to a source IP are not the same thing in Linux. In the RDMA CM case the listening side doesn't do any IP routing operations at all so a device bind isn't necessary. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
