[Freeswitch-users] FreeSWITCH didn't send any rtp packages to callee in ipv6 calls

Mike Jerris mike at freeswitch.org
Fri Apr 9 15:04:37 UTC 2021

Look at the logs and the media addresses being negotiated.

> On Apr 8, 2021, at 9:02 PM, 王聡 <cong.wang.itsherpa at gmail.com> wrote:
> Hi all,
> We’re preparing to upgrade our fs server for ipv6 supporting, but it is not going well on test.
> The test proceeded on FreeSWITCH 1.10.6 and LinphoneSDK 4.5.0, under IPv6Only networks.
> As the result, the callee couldn’t hear any voice from caller, while caller works fine.
> The tcpdump showed that freeswitch didn’t send any rtp packages to callee, like this:
> <PastedGraphic-1.png>
> [2001::14] is FreeSWITCH, [240d::68ae] is the caller, and [240d::b342] is the callee, which missed the rtp stream from server.
> We tried to exchange the device of caller and callee, but result didn’t change (callee couldn’t hear any voice from caller).
> FreeSWITCH Console also showed no error and RTP port is set correctly.
> Environment:
> FreeSWITCH Version 1.10.6-release+git~20210325T131609Z~1ff9d0a60e~64bit (git 1ff9d0a 2021-03-25 13:16:09Z 64bit)
> Linphone iOS 4.4.0 with Linphone SDK 4.5.0 / iOS 13.7
> Any suggestion would be appreciated.

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