Setting the source IP for a UDP socket

Question

I have a UDP socket that is bound to INADDR_ANY to listen to packets on all the IPs my server has. I\'m sending out replies through the same socket.

Right now the se

Answer 1

You either bind(2) to each interface address and manage multiple sockets, or let the kernel do the implicit source IP assignment with INADDR_ANY. There is no other way.

My question would be - why do you need this? Is normal IP routing not working for you?