When used `tcp_accept_haproxy=yes` and inbound connection from load-balancer received via IPv6 protocol and client real IPv4 then i can see error in the kamailio log ``` 28(723055) ERROR: {1 27 REGISTER 4fkReTbLC-} siptrace [siptrace_hep.c:94]: trace_send_hep3_duplicate(): interworking detected ? ```
Looks like requried add haproxy protocol support into siptrace module