On Wed, 18 Dec 2019 07:41:21 -0600 John Hasler <jhasler@newsguy.com> wrote: > This may be what you have: > https://en.wikipedia.org/wiki/IPv6#IPv4-mapped_IPv6_addresses Thank you. As per my other mail, it turns out that it's apparently this: https://en.wikipedia.org/wiki/IPv6_transition_mechanisms#NAT64 https://en.wikipedia.org/wiki/IPv6_transition_mechanisms#464XLAT Celejar