[Users] Openser on multi-homed server

Hello there, We currently have the following configuration. An openser is listening on two interfaces. One is linked to an internal private network, on which users (sipphones) are. The other is link to a public network. We noticed several issues : - When an INVITE (for exemple) comes from the private network and has to be relayed to the public network, openser put the private address as the source of the outgoing message. (sendto() use the same socket from which the message came from ?) - To solve this issue, we set up openser to listen on 0.0.0.0 (only one socket) but with this config, openser was unable to put the correct address into 'Record-Route' headers. (i.e. Record-Route: <sip:0.0.0.0:5060> !) Is there a specific way of setting up openser in a multi-homed situation ? Thanks in advance. -- Simon Morvan