<!-- Kamailio Project uses GitHub Issues only for bugs in the code or feature requests. Please use this template only for bug reports. If you have questions about using Kamailio or related to its configuration file, ask on sr-users mailing list: * https://lists.kamailio.org/mailman3/postorius/lists/sr-users.lists.kamailio… If you have questions about developing extensions to Kamailio or its existing C code, ask on sr-dev mailing list: * https://lists.kamailio.org/mailman3/postorius/lists/sr-dev.lists.kamailio.o… Please try to fill this template as much as possible for any issue. It helps the developers to troubleshoot the issue. Note that an issue report may be closed automatically after about 2 months if there is no interest from developers or community users on pursuing it, being considered expired. In such case, it can be reopened by writing a comment that includes the token `/notexpired`. About two weeks before considered expired, the issue is marked with the label `stale`, trying to notify the submitter and everyone else that might be interested in it. To remove the label `stale`, write a comment that includes the token `/notstale`. Also, any comment postpone the `expire` timeline, being considered that there is interest in pursuing the issue. If there is no content to be filled in a section, the entire section can be removed. You can delete the comments from the template sections when filling. You can delete next line and everything above before submitting (it is a comment). -- ### Description we are using version: kamailio 5.5.1 (x86_64/linux) 8aa8df-dirty and we have a setup with 2 kamailio instances. First one is doing topoh, and the second one is supposed to not do it Despite this we do see that some replies the second instance is masking some headers like record route and contact in the 200ok (not in the 180) Besides, seems that when the b-side sends a BYE, kamailio show an error, see in logs part However, in the sip pcap we do see thre BYE like it should be. At least that's what it seems to me i attach you the trace [topoh_bye_bad_message.txt](https://github.com/kamailio/kamailio/files/15324… do you have any idea of what can be the issue? <!-- Explain what you did, what you expected to happen, and what actually happened. -- ### Troubleshooting #### Reproduction <!-- If the issue can be reproduced, describe how it can be done. -- #### Debugging Data <!-- If you got a core dump, use gdb to extract troubleshooting data - full backtrace, local variables and the list of the code at the issue location. gdb /path/to/kamailio /path/to/corefile bt full info locals list If you are familiar with gdb, feel free to attach more of what you consider to be relevant. -- ``` (paste your debugging data here) ``` #### Log Messages <!-- Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -- ``` May 15 13:19:42 vqbert-2 /usr/local/kamailio/sbin/kamailio[31824]: ERROR: <core> [core/parser/parse_fline.c:272]: parse_first_line(): parse_first_line: bad message (offset: 54) ��%����QI:19:42 vqbert-2 /usr/local/kamailio/sbin/kamailio[31824]: ERROR: <core> [core/parser/msg_parser.c:748]: parse_msg(): ERROR: parse_msg: message=<BYE �ͥ���ĸ��Ը��ĸ���������Ʌ�������Ց��!���ᕈ�|��� ����������������� SIP/2.0 Via: SIP/2.0/UDP 199.244.96.39:5060;TH=ucv;branch=z9hG4bK-524287-1---513df3f6b3057f235eef63c542634016;rport Via: SIP/2.0/UDP 199.244.96.46:5071;rport=5071;branch=z9hG4bK-mx5umw4feykudkd5 Max-Forwards: 69 Route: <sip:79.170.71.169;lr;ftag=11002597000844;did=7842.5393Route: <sip:79.170.71.168;lr=on;ftag=11002597000844;did=b09.3b49��%����QI���ĸ��Ը��ĸ���������Ʌ�������Ց�����!���ᕈ�|��� ����������>�����������������`�!ɉU� Contact: sip:199.244.96.46:5071 To: +233240979290 <sip:+233240979290@79.170.71.168;user=phone>;tag=11002597000844 From: +233307000929 <sip:+233307000929@199.244.96.39.SBC1;user=phone>;tag=W7OXULJ726L2OYQEVKNA____.i Call-ID: Sonoc2Did!!:C9WJ3uq4gtNwMlcfzxFlM.jAkx0J34pvaRgtCt0vPl0EPxFwMJZfWJZfMBy7MP** CSeq: 905 BYE Allow: INVITE, ACK, BYE, CANCEL, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS, UPDATE User-Agent: PortaSIP cisco-GUID: 3592442246-2620412195-1372314391-1317599184 h323-conf-id: 3592442246-2620412195-1372314391-1317599184 Content-Length: 0 TH: uch May 15 13:19:42 vqbert-2 /usr/local/kamailio/sbin/kamailio[31824]: ERROR: <core> [core/receive.c:377]: receive_msg(): core parsing of SIP message failed (199.244.96.39:5060/1) ``` #### SIP Traffic <!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -- ``` No. Time Source Destination Protocol Length Info 17 62.116377 19.24.9.39 10.100.10.169 SIP 1273 Request: BYE sip:127.0.0.8;line=sonoc2did-N6IAzBPfOBVfWmZfWBF7WlN-W.y6Mx14NEt7Nw05NhPQpRaAz4rApx4ZgRVZ9lF6z4WZpFIqH.PXKtexHRgEgEgEgEgEORgEgEgEgEgE | Frame 17: 1273 bytes on wire (10184 bits), 1273 bytes captured (10184 bits) Linux cooked capture Internet Protocol Version 4, Src: 19.24.9.39, Dst: 10.100.10.169 User Datagram Protocol, Src Port: 5060, Dst Port: 5060 Session Initiation Protocol (BYE) Request-Line: BYE sip:127.0.0.8;line=sonoc2did-N6IAzBPfOBVfWmZfWBF7WlN-W.y6Mx14NEt7Nw05NhPQpRaAz4rApx4ZgRVZ9lF6z4WZpFIqH.PXKtexHRgEgEgEgEgEORgEgEgEgEgE SIP/2.0 Method: BYE Request-URI: sip:127.0.0.8;line=sonoc2did-N6IAzBPfOBVfWmZfWBF7WlN-W.y6Mx14NEt7Nw05NhPQpRaAz4rApx4ZgRVZ9lF6z4WZpFIqH.PXKtexHRgEgEgEgEgEORgEgEgEgEgE [Resent Packet: False] Message Header Via: SIP/2.0/UDP 19.24.9.39:5060;branch=z9hG4bK-524287-1---513df3f6b3057f235eef63c542634016;rport Via: SIP/2.0/UDP 19.24.9.46:5071;rport=5071;branch=z9hG4bK-mx5umw4feykudkd5 Max-Forwards: 69 Route: <sip:10.100.10.169;lr;ftag=11002597000844;did=7842.5393 Route: <sip:10.100.10.168;lr=on;ftag=11002597000844;did=b09.3b49 Route: <sip:127.0.0.8;line=sonoc2did-N6IAzBPfOBVfWmZfWBF7WlN-W.y6Mx14NEt7Nw05NhPQpRaAz6fLz4rApx4ZgRVZ9lF6z4WZpFIqH.PXKtexHRgEgEgEgEgEORgEgEgEgEgEzuc1mUpGMEeK3jW5o61Yg.4fWBMLWc** Contact: sip:19.24.9.46:5071 To: +233240979290 <sip:+233240979290@10.100.10.168;user=phone>;tag=11002597000844 From: +233307000929 <sip:+233307000929@19.24.9.39.SBC1;user=phone>;tag=W7OXULJ726L2OYQEVKNA____.i Call-ID: Sonoc2Did!!:C9WJ3uq4gtNwMlcfzxFlM.jAkx0J34pvaRgtCt0vPl0EPxFwMJZfWJZfMBy7MP** [Generated Call-ID: Sonoc2Did!!:C9WJ3uq4gtNwMlcfzxFlM.jAkx0J34pvaRgtCt0vPl0EPxFwMJZfWJZfMBy7MP**] CSeq: 905 BYE Allow: INVITE, ACK, BYE, CANCEL, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS, UPDATE User-Agent: PortaSIP cisco-GUID: 3592442246-2620412195-1372314391-1317599184 h323-conf-id: 3592442246-2620412195-1372314391-1317599184 Content-Length: 0 ``` ### Possible Solutions <!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. -- ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` (paste your output here) ``` * **Operating System**: <!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `lsb_release -a` and `uname -a`) -- ``` (paste your output here) ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3853 You are receiving this because you are subscribed to this thread. Message ID: &lt;kamailio/kamailio/issues/3853(a)github.com