<!-- 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: * http://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users If you have questions about developing extensions to Kamailio or its existing C code, ask on sr-dev mailing list: * http://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev Please try to fill this template as much as possible for any issue. It helps the developers to troubleshoot 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 running Kamailio in a Microsoft Azure VM. Azure started adding EDNS0 support - in the form of OPT pseudo-records at the end of replies - a few weeks ago and since then we see a lot of ERROR entries in Kamailio log. These do however have no function impact. Version in use is latest 5.2 package from Kamailio repo on Debian 9 (Stretch). Log entries provided below ### Troubleshooting None, as this has no functional impact aside from filling the logs. #### Reproduction I can provide pcap of DNS traffic that contains EDNS0 OPT pseudo-entries on request. #### 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). --> ``` Oct 1 14:02:01 kamailio /usr/sbin/kamailio[78878]: ERROR: <core> [core/resolve.c:941]: get_record(): unknown type 41 ``` These lines are seen repeatedly only differing in timestamp and PID of kamailio process. In total about 40% of log entries are like the one above. #### 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). --> not related to SIP, but to DNS ### Possible Solutions Add EDNS0 type 41 in core/resolv.c and don't fire an ERROR in the logs. ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 5.2.4 (x86_64/linux) flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled with gcc 6.3.0 ``` * **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 `uname -a`) --> ``` Debian 9.11 Linux kamailio 4.19.0-0.bpo.5-cloud-amd64 #1 SMP Debian 4.19.37-3~bpo9+1 (2019-05-18) x86_64 GNU/Linux ``` -- 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/issues/2087