Dave Crocker wrote:
I keep trying to understand why the SMTP use of AAAA records should be any
different than its use of A records. Haven't heard a solid explanation,
nevermind seen consensus forming around it.
because conditions are different now than it was when RFC 974 was
written, and the case that compelled fallback to A in RFC 974 does not
significantly exist for AAAA.
I keep trying to understand why people keep expecting IPv4 to operate
exactly the same as IPv6 without bothering to consider the differences
between them. (Or maybe I just answered my own question?)
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