Looks like a regression introduced with a patch that tried to avoid a crash -- I pushed another commit to skip the test on cseq when not taken from sip request. It is already in branch 5.2, can you test and see if all ok now? -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/commit/79946bbb6d1731f503fc378ae38311b…