<div dir="ltr">So in this case I would just have to generate two invites (one for each profile) both to Kamailio, and then filter contacts in Kamailio (v6 invite goes to v6 registrations, v4 to v4, etc)?<div><br></div><div>In any case, my use for setting something like advertised_rtp_ip (does anything like this exist?) would be to actually explicitly set a hostname (rather than an IP) for certain endpoints that are going to have compatibility issues with IP literals (such as iOS devices). I used a poor example there, as I wasn't intending to cross the v4/v6 bridge with it.</div><div><br></div><div>Best,</div><div>Colin</div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Aug 3, 2016 at 10:42 AM Brian West <<a href="mailto:brian@freeswitch.org">brian@freeswitch.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">You should NOT be setting advertised_rtp_ip, We use a V4 profile or aV6 profile, you can't mix and match, doing so would probably not work at all.</div><div class="gmail_extra"></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 3, 2016 at 8:53 AM, Colin Morelli <span dir="ltr"><<a href="mailto:colin.morelli@gmail.com" target="_blank">colin.morelli@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Interesting. So far it has worked on all clients except WebRTC. It seems strange to me that putting a hostname in an SDP wouldn't be allowed, but it's far from the weirdest thing I've seen in some these specs.<div><br></div><div>I'm fine with having IPs in the SDP for pretty much all cases, except for the iPhone where it is supposedly necessary to not use IP literals. So I guess I have two questions then:</div><div><br></div><div>1. Is there a way in FS to explicitly set an advertised IP address through a channel var? Actually, in this case I would just define a few options in vars.xml and then use expansion. Something like, advertised_rtp_ip=${local_ipv4} or advertised_rtp_ip=${local_ipv6}</div><div><br></div><div>2. How are people deciding whether to advertise IPv4/IPv6 if FS <i>isn't</i> handling registrations. Say, for example, Kamailio handles registrations. FS only knows if it'll talk to Kamailio via 4 or 6, but not what Kamailio will use to talk to the clients. Is there a best practice here for supporting dual stack?</div><div><br></div><div>Best,</div><div>Colin</div></div><div><div><br><div class="gmail_quote"><div dir="ltr">On Wed, Aug 3, 2016 at 1:13 AM Michael Jerris <<a href="mailto:mike@jerris.com" target="_blank">mike@jerris.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I have not once in my life seen someone use a hostname instead of an ip in an sdp, and I do not believe it is legal.<br>
<br>
> On Aug 2, 2016, at 1:00 PM, Colin Morelli <<a href="mailto:colin.morelli@gmail.com" target="_blank">colin.morelli@gmail.com</a>> wrote:<br>
><br>
> Hey all,<br>
><br>
> So it looks like WebRTC has issues dealing with hostnames in the SDP instead of IP addresses. Particularly, when including a hostname in the SDP there's no audio in either direction. This is the case in both the latest Firefox + Chrome browsers.<br>
><br>
> This is particularly problematic for applications that are WebRTC + mobile, now that Apple is enforcing applications to support IPv6-only networks. Using hostnames in the record-route and SDP addresses meets the requirement since the OS will synthesize an IPv6 address when a DNS query is performed, but according to the documentation they strongly urge applications to avoid using address literals in their applications.<br>
><br>
> Has anyone had success with methods to switch between advertising a hostname vs IP address in the SDP? Or other methods for solving this problem?<br>
<br>
<br>
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<p><font face="courier new, monospace"><b><i><font size="4">Brian West</font></i></b><br><span style="font-size:x-small"><a href="mailto:brian@freeswitch.org" target="_blank">brian@freeswitch.org</a></span></font></p>
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