Hello all, It looks like mod_pike is broken in 5.4 branch since 5.4.6 because this patch is missing: https://github.com/kamailio/kamailio/commit/79fbb7c6df5d4c742b1283b752c2df0… <https://github.com/kamailio/kamailio/commit/79fbb7c6df5d4c742b1283b752c2df0f51e77f09> If I test my script and send a lot of REGISTER messages, I only see this DEBUG message, the IP is never added to the tree: DEBUG: {1 [100-6380(a)10.211.55.12 <mailto:100-6380@10.211.55.12>] [1 REGISTER] [0]} pike [ip_tree.c:291]: mark_node(): search on branch 10 (top=(nil)) Versions 5.5.x are OK again. Thanks and regards Markus _______________________________________________ Kamailio (SER) - Development Mailing List sr-dev(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev