[SR-Users] topoh and onhold reinvites

I'm having some trouble with kamailio that uses the topology hider module and an incoming call being put onhold by the caller. The INVITE containing the sdp a=sendonly is to the 172.19.162.1 (the topoh mask_ip) contact header from the 200 OK to the initial INVITE. U 109.235.36.178:5060 -> 109.235.32.40:5060 INVITE sip:172.19.162.1:5060;line=pcs- mp4KWiTsxRmtEAM3WGysx7y3xGnoxAxtuAxSuA7KEsktxGZKWgQfZD6smqlf9Gttzjy*;user=phone SIP/2.0. This is handled within dialog (has_totag() && !loose_route()), which in the default config ends in a sl_send_reply("404","Not here") Explicitly handing INVITE (just relaying), results in the INVITE being sent to 172.19.162.1 (which doesn't exist) U 109.235.32.40:5060 -> 172.19.162.1:5060 INVITE sip:172.19.162.1:5060;line=pcs- mp4KWiTsxRmtEAM3WGysx7y3xGnoxAxtuAxSuA7KEsktxGZKWgQfZD6smqlf9Gttzjy*;user=phone SIP/2.0. How to get this INVITE to the actual destination? To get the same result for the INVITE as for the ACK to the 200 OK? U 109.235.32.40:5060 -> 109.235.36.178:5060 SIP/2.0 200 OK. ... Contact: <sip:172.19.162.1;line=pcs- mp4KWiTsxRmtEAM3WGysx7y3xGnoxAxtuAxSuA7KEsktxGZKWgQfZD6smqlf9Gttzjy*>. U 109.235.36.178:5060 -> 109.235.32.40:5060 ACK sip:172.19.162.1;line=pcs- mp4KWiTsxRmtEAM3WGysx7y3xGnoxAxtuAxSuA7KEsktxGZKWgQfZD6smqlf9Gttzjy* SIP/2.0. U 109.235.32.40:5060 -> 109.235.34.107:5060 ACK sip:+31756418030@109.235.34.107:5060;transport=udp SIP/2.0. -- POCOS B.V. - Croy 9c - 5653 LC Eindhoven Telefoon: 040 293 8661 - Fax: 040 293 8658 http://www.pocos.nl/ - http://www.sipo.nl/ K.v.K. Eindhoven 17097024