without this patch nathelper build request-uri from received if it's set and falls back to contact. Now we have an option to send the Contact (that has the username part) no matter what. We used this in order to fix problems with FritzBox subscribers but seeing https://www.mail-archive.com/sr-users@lists.sip-router.org/msg13081.html maybe this is useful for everybody with @sipwise hat on You can merge this Pull Request by running: git pull https://github.com/linuxmaniac/kamailio vseva/nathelper_contact_only Or you can view, comment on it, or merge it online at: https://github.com/kamailio/kamailio/pull/31 -- Commit Summary -- * usrloc: add GAU_OPT_ONLY_CONTACT option and get_all_ucontacts_opt() in order to use it * nathelper: add contact_only option to ignore "received" field from usrloc and use contact info for building the ping message -- File Changes -- M modules/nathelper/doc/nathelper_admin.xml (20) M modules/nathelper/nathelper.c (12) M modules/usrloc/dlist.c (34) M modules/usrloc/dlist.h (14) M modules/usrloc/usrloc.c (1) M modules/usrloc/usrloc.h (6) -- Patch Links -- https://github.com/kamailio/kamailio/pull/31.patch https://github.com/kamailio/kamailio/pull/31.diff --- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/pull/31