I’m investigating the feasibility of transitioning to an all-ipv6 home network. Thanks to NAT64/DNS64, most of my equipment and services will still work, but I haven’t heard that the Republic Wireless telephony works with IPv6 yet.
The following threads by janus_god ask about ipv6 connectivity and didn’t get much response, at least nothing official:
Enable IPv6 connectivity
IPv6 for SIP and RTP?
Will RW enable ipv6 based telephony in 2017?