On Thu, 2005-09-29 at 11:48, Roland Dreier wrote: > Hal> Hi, Does anyone know what the Linux routing code does in > Hal> terms of selecting an outgoing interface when multiple net > Hal> devices have been configured with the same IP address ? > > It follows the routing table. If you assign the same local IP address > to multiple interfaces then you have to be careful to set up routing > so that your traffic goes to the right place. > > In fact you can think of Linux networking as attaching IP addresses to > the system as a whole instead of a particular interface, because for > example by default Linux will respond to ARP queries on any > interface. Assigning addresses to a particular interface is just a > hint for how the kernel sets up routes by default.
So the routing lookup (ip_route_output_key) is just fine then for selecting the outgoing interface. Just sometimes if the default is all that is available, some outgoing interfaces may be less used than others. -- Hal _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
