Hi, I'm using ser proxy server the latest version 0.9.I'm running ser on ipv6 PC ,listening on ipv6 address whihc i configured in ser.cfg. Using some other clients which are running on ipv6 PC's can able to call from UDP-UDP properly.AS ser runs on both UDP and TCP ,the TCP-TCP calls also should go properly. But the error 'tcp_blocking_connect:(22) Invalid Argument' is coming when the next hop from the proxy is TCP. Kindly support for this problem. Regards, Jayasree