[sr-dev] [kamailio/kamailio] auto_bind_ipv6 prevents listening also on ipv4 if system has no ipv6 (Issue #4098)

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While this can be worked around by putting that config value behind a definition and autodetection by an external script, should not it work and just start on ipv4 if ipv6 is not available? ### Troubleshooting #### Reproduction <!-- If the issue can be reproduced, describe how it can be done. --> Just start Kam as root, with no `listen` directives (to let it listen on all ipv4) and `auto_bind_ipv6` set to 1. #### 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). --> ``` 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: lo Fam: 2 Flg: 10049 Adr: 127.0.0.1 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: enp81s0u1u4 Fam: 2 Flg: 11043 Adr: 192.168.1.222 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: wlp0s20f3 Fam: 2 Flg: 11043 Adr: 192.168.1.196 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: br-65b842ff8266 Fam: 2 Flg: 1003 Adr: 192.168.49.1 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: br-kamnet Fam: 2 Flg: 11043 Adr: 172.23.42.1 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: br-f1829eb65bac Fam: 2 Flg: 1003 Adr: 172.18.0.1 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: br-f521fee918b4 Fam: 2 Flg: 1003 Adr: 172.19.0.1 0(1) DEBUG: <core> [core/socket_info.c:1764]: add_interfaces(): If: docker0 Fam: 2 Flg: 1003 Adr: 172.17.0.1 0(1) DEBUG: <core> [core/socket_info.c:1507]: build_iface_list(): received 728 byles 0(1) DEBUG: <core> [core/socket_info.c:1507]: build_iface_list(): received 20 byles 0(1) DEBUG: <core> [core/socket_info.c:1510]: build_iface_list(): done receiving netlink info 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 1 (n: 0) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '127.0.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '127.0.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is lo 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 3 (n: 1) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '192.168.1.222' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '192.168.1.222' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is enp81s0u1u4 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 4 (n: 2) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '192.168.1.196' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '192.168.1.196' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is wlp0s20f3 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 5 (n: 3) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '192.168.49.1' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '192.168.49.1' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is br-65b842ff8266 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 6 (n: 4) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '172.23.42.1' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '172.23.42.1' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is br-kamnet 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 7 (n: 5) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '172.18.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '172.18.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is br-f1829eb65bac 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 8 (n: 6) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '172.19.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '172.19.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is br-f521fee918b4 0(1) DEBUG: <core> [core/socket_info.c:1542]: build_iface_list(): trying network interface index: 9 (n: 7) 0(1) DEBUG: <core> [core/socket_info.c:1559]: build_iface_list(): iface <IFA_ADDRESS> address is '172.17.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1569]: build_iface_list(): iface <IFA_LOCAL> address is '172.17.0.1' 0(1) DEBUG: <core> [core/socket_info.c:1573]: build_iface_list(): iface name is docker0 0(1) DEBUG: <core> [core/socket_info.c:1507]: build_iface_list(): received 1740 byles ``` ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` head of 5.8 branch as of today ``` * **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`) --> ``` ubuntu noble (in a docker container) ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/4098 You are receiving this because you are subscribed to this thread. 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