A default handle range system, or favored protocol, should be configured both on hosts or maybe the DNS server. The IETF has released Delighted Eyeballs to aid twin-stack apps, so which they can join applying both equally IPv4 and IPv6, but prefer an IPv6 relationship if it is out there. https://complianceservices79671.win-blog.com/5803131/the-5-second-trick-for-what-is-my-ip