Daniel-Constantin Mierla writes:
iirc, it was always the same from the time of ser 0.8. If you don;t change the protocol, the core tries to send from the same socket it received. You have to use mhomed=1 in order to have detection of outgoing interface. 3.x has significant improvements for mhomed=1 done by Marius.
yes, i just had forgotten to call force_send_socket() in one particular case and therefore got the send errors.
i have not used mhomed=1 because of the performance warning on the wiki page. it that warning still valid?
-- juha