Just an FYI if you use the MWI-Account setting. I had IPV6 working fine with calls in and out, but had to go back to IPV4. I use MWI to signal a VM message on multiple phones and that does not work for IPV6, see FS-9430, FS-9428 and FS-10683(I need to update soon) which are still outstanding. So I had to finally give up and go back to IPV4. I had some other things not work right with IPV6 but it’s been a while and can’t remember them. But MWI was the killer for me.
Mario G

On Aug 25, 2019, at 6:34 PM, 王聡 <cong.wang.itsherpa@gmail.com> wrote:

Hi all,

According to Apple and Google’s app review guideline, all apps need to support IPv6-only network, 
so I tried to enable ipv6 support on my freeswitch server.

In my development environment, a server with both ipv4 and ipv6 address is ready. 

Server Info:
Debian stretch 9.9
FreeSWITCH Version 1.8.7+git~20190702T200609Z~6047ebddfc~64bit (git 6047ebd 2019-07-02 20:06:09Z 64bit)

Also, profile external-ipv6 and internal-ipv6 for freeswitch had also enabled.
In addition, a pure-ipv6 network(no NAT64) is also ready for test.

As the test result, clients could access to server via ipv6-only network for registration(sip package showed in server with siptrack),
but failed to make calls in same network. 

Freeswitch log showed a failure in originate, which returned an 606 USER NOT REGISTERED. 
Both clients was showed in “show registrations” with correct ipv6 address, but Sofia couldn’t get contact string(got 606 in sofia_contact).

Is there any additional settings need for Sofia to enable ipv6 support? Any suggestion would be appreciated.

Regards.
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