<div dir="ltr"><div><div>Hi list,</div><div><br></div>I have production environment based on IPv4 with opensips 1.9 as sip proxy and mediaproxy 2.0 as RTP proxy. <br><br></div>I need to manage old and new IPv6 ready client with same infrastructure. Currently its not feasible to move infrastructure to IPv6 ready network. <br><div><div><div><div class="gmail_extra"><br></div><div class="gmail_extra">I have gone through the link for IPv6 <--> IPv4 translation.<br></div><div class="gmail_extra"><a href="https://trac.pjsip.org/repos/wiki/IPv6#NAT64">https://trac.pjsip.org/repos/wiki/IPv6#NAT64</a><br></div><div class="gmail_extra"><br></div><div class="gmail_extra">Using IPv6 ready client, I am able to initiate and connect call through Opensips but there is no media for this call. Does that mean mediaproxy is unable to proxy the RTP packets?<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">For IPv4 clients same infrastructure work fine. <br></div><div class="gmail_extra"><br></div><div class="gmail_extra">What could be the appropriate solution for this scenario?</div><div class="gmail_extra"><br></div><div class="gmail_extra">According to the link above...last lines.... <br></div><div class="gmail_extra"><span style="color:rgb(0,0,0);font-family:Verdana,Arial,"Bitstream Vera Sans",Helvetica,sans-serif;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;display:inline;float:none">....<br></span></div><div class="gmail_extra"><span style="color:rgb(0,0,0);font-family:Verdana,Arial,"Bitstream Vera Sans",Helvetica,sans-serif;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;display:inline;float:none">If 1) is not possible (no IPv6 server or not desirable to use TURN), we will need to replace all IPv6 occurrences with IPv4 in the SIP messages and SDP. This feature is available in release 2.7.<span> </span></span><span class="gmail-wikianchor" id="gmail-NAT64-IPv4" style="color:rgb(0,0,0);font-family:Verdana,Arial,"Bitstream Vera Sans",Helvetica,sans-serif;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"></span><span style="color:rgb(0,0,0);font-family:Verdana,Arial,"Bitstream Vera Sans",Helvetica,sans-serif;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;display:inline;float:none"></span><ol class="gmail-loweralpha" style="list-style-type:lower-alpha;color:rgb(0,0,0);font-family:Verdana,Arial,"Bitstream Vera Sans",Helvetica,sans-serif;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><li>You need a STUN server which resides in an IPv4 network. Then set your<span> </span><tt>pjsua_config</tt><span> </span>to try IPv6 resolution of the STUN servers.</li><li>Create UDP6 transport to get an IPv4-mapped address from the above STUN server.</li><li>Bind account to a specific IPv6 transport, and enable IPv6 in media transport.</li><li>Set account's NAT64 option to PJSUA_NAT64_ENABLED.</li></ol></div><div class="gmail_extra">......</div><div class="gmail_extra"><br></div><div class="gmail_extra">What type of STUN server I can use here?</div><div class="gmail_extra"><br clear="all"></div><div class="gmail_extra"><div><div class="gmail_signature"><div><font size="2"><span style="font-family:verdana,sans-serif"><span style="color:rgb(39,78,19)">--<br>regards,</span></span></font></div><font size="2"><span style="font-family:verdana,sans-serif"><span style="color:rgb(39,78,19)"><br>abdul basit</span></span></font><br></div></div></div></div></div></div></div>