Hello,

In the example for a dual-stack IPv6/IPv4 Kamailio setup here: 
https://kb.asipto.com/kamailio:kamailio-mixed-ipv4-ipv6 the "FLB_IPV6" flag is being 
sent on IPv6 registrations. Why set this flag on IPv6 registrations? If I understand 
correctly, registration requests never make it beyond !save("location so it's not like 
the flag can be used further in the dial-plan.

The code in question:

route[REGISTRAR] {
        if (is_method("REGISTER"))
        {
                if(isflagset(FLT_NATS))
                {
                        setbflag(FLB_NATB);
                        # uncomment next line to do SIP NAT pinging
                        ## setbflag(FLB_NATSIPPING);
                }
                if(af==INET6)
                        setbflag(FLB_IPV6);
                if (!save("location"))
                        sl_reply_error();
exit;
        }
}


Any help is appreciated.

Thanks


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