[dns-operations] Apex ALIASES that re NOT flattened CNAMEs

[Paul Vixie]

every few years the cdn world proposes something like an ALIAS RR. usually it 
fails at the problem-statement stage. afterward a few more innovators hack 
their own name servers to do what they need -- usually in a unique way and 
often in a way that blows chunks when other differently-hacked name servers get 
a look at the on-the-wire signaling.

mark andrews sometimes reminds us that SRV is /n/ decades old and had the web 
adopted it even /n-1/ decades ago these problems would no longer be with us.

now we're getting SVCB and HTTPS records. that'll take a while to push CNAME 
aside but it's the right horse to bet on, vs. getting innovators to stop 
inventing new ways to avoid change CNAME for their own use cases.