[Serusers] NAT Issues (ACK & BYE sent to Private IP)

[Nhadie Ramos]

Hi All,

How can i solve the issue of ACK and BYE being sent to private IP?
i'm behind a DSL modem/router (siemens speedstream), when i register to 
the SIP server, the SIP server does not think that i'm behind a NAT.
because on my config:

                if (method=="REGISTER") {
                        if (nat_uac_test("19")) {
                                xlog("L_INFO","%fu behind NAT");
                                fix_nated_register() xlog("L_INFO","%fu 
NATTED REGISTER FIXED");
                                force_rport() xlog("L_INFO","%fu rport 
forced");
                        };
                        xlog("L_INFO","%fu trying to register");
                        if (!www_authorize("mydomain.com", "subscriber")) {
                                www_challenge("mydomain.com", "0");
                                break;
                        };
                        xlog("L_INFO","%fu registered");
                        save("location");
                        break;
                };

i don't see on my log messages, the message if nat_uac_test returns 
true, i tried changing it to 23 then 31 and still nat_uac_test returns 
false.
also i'm seeing that c IN= is already the public IP, but why is it that 
ACK and BYE are still sending it to the private IP?

TIA

Nhadie