[Freeswitch-users] ACK to wrong ip

Hi, in my case FS send ACK to wrong ip (to ip in contact of 200 ok (private ip) and not to ip from which request was recived (public ip)). I tried with <param name="NDLB-force-rport" value="true"/> on internal profile but still the same. Must this be done on external profile or something else must be done? tnx miha