Re: IPv6 bind wrong IP. #4199

As I know netstat stip long IPv6 addresses during output.
Try using

ss -l -n

On Wed, 2025-04-09 at 16:10 +0700, Vu Nguyen via sr-users wrote:
> Dear Sir,
> I have opened an issue on GitHub: "IPv6 bind wrong IP. #4199 [1]".
> System Details:
> * 
> Kamailio (5.8.x) – SIP Proxy
> * 
> FreeSWITCH – Media Server
> * 
> OS – Debian 12
> * 
> Gateway – aaaa:bbb:cccc:20::1
> * 
> IPv6 Address – aaaa:bbb:cccc:20::41e
> 
> kamailio.cfg:
> #!define ADDR_IPV4 xxx.xxx.xxx.xxx #!define ADDR_IPV6
> [aaaa:bbb:cccc:20::41e] listen=ADDR_IPV4 listen=ADDR_IPV6
> 
> netstat Output:
> tcp6 0 0 aaaa:bbb:cccc:20:::5060 :::* LISTEN 1691274/kamailio tcp6 0
> 0 aaaa:bbb:cccc:20:::5061 :::* LISTEN 1691274/kamailio udp6 0 0
> aaaa:bbb:cccc:20:::5060 :::* 1691222/kamailio
> As shown, although I explicitly set the listen IP to
> aaaa:bbb:cccc:20::41e, Kamailio strips the last part of the address
> and binds to aaaa:bbb:cccc:20::
> I also upgraded to version 6.0 with default cfg and set
> auto_bind_ipv6=1 or changed ipv6 address, but the issue still
> persists.
> 
> IPv6 Interface Configuration:
> auto eth1 iface eth1 inet6 static address aaaa:bbb:cccc:20::41e
> netmask 64 gateway aaaa:bbb:cccc:20::1
> I can successfully ping in and out using this IPv6 address.
> 
> Do I need to configure anything else in Kamailio or the system to
> ensure it binds to the full IPv6 address aaaa:bbb:cccc:20::41e as
> expected?
> 
> Currently I can register with ipv4, but ipv6 does not.
> Thank you for your assistance.
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[1] IPv6 bind wrong IP. #4199
    https://github.com/kamailio/kamailio/issues/4199

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