Hi,

I am trying to use RTPproxy 1.2.1 in bridge mode between IPv4 and IPv6 together with Kamailio 3.2. I configured and ran it on server together with Kamailio.

I start it with parameters:

-l 192.168.6.2 -6 /2001:6666:6666:6666::2 -s udp:localhost:7722

SIP messages are correctly exchanged, SDP looks to be translated, but when RTP session starts, I see RTP flow only from UC1 to RTPproxy and nothing more. 

On RTPproxy server I see 4 open ports for IPv4 address but no one for IPv6 address.

When I tried to change start parameters to 

 -6 2001:6666:6666:6666::2 -l /192.168.6.2 -s udp:localhost:7722

I could see 4 open ports for IPv6 address but no one for IPv4 address.

Can anybody help? do you know about any known error? can it be related to Kamailio or RTPproxy?

thank you,

Lukas Lani