[OpenSER-Users] maddr in contact

Hi : I have a flow UE -> gateway (use openser and runs proxy mode) ( ip : 192.168.1.2) -> SIP Proxy ( ip: 192.168.1.3), if i have two user , UE1(192.168.1.5) and UE2(192.168.1.6) send REGISTER request to SIP proxy through gateway, but our gateway add a maddr = "192.168.1.2" string in contact header,so the contact in REGISTER becomes <username@ host ; maddr="192.168.1.2">. now , if UE1 send INVITE message to UE2, how does sip proxy to do if receive INVITE message? it will send invite message to UE2 through gateway ( maddr parameter) ? and does openser has support maddr in contact or not . thx. allan