В письме от 6 декабря 2013 02:28:32 пользователь Sargun Dhillon написал:
So, from my understanding, routes in the Linux kernel have can have a source associated with them.This is RTA_SRC attribute in netlink ( I think ).
Maybe you mean RTA_PREFSRC attr? This is implemented and could be set/get withing BIRD filters using krt_prefsrc attribute without any problem.
We basically want to ensure that when our routers get routes, locally generated traffic comes from the loopback address.
Yes, setting krt_prefsrc whould help, but as for me there is no good reason to do this on router, as you loose troubleshooting hint on where packets failed to deliver (for example TTL exceeded in transmit) should be delivered: you always get ansver from your router loopback.
Does anyone know a way to do this? I think if BIRD set RTA_SRC before sending the route to the kernel, it would work. Could this attribute be surfaced via BIRD easily?
-- SP5474-RIPE Sergey Popovich