head scratcher: nsupdate, Bind views, and TLSA record updates

Tony Finch dot at dotat.at
Wed Nov 1 09:50:32 UTC 2017

Mark Andrews <marka at isc.org> wrote:
> More correctly _tcp.mail.thesandiegos.com is delegated to
> ns1._tcp.mail.thesandiegos.com ( but the machine is
> not configured to serve that zone.

This also explains the puzzling check-names problem earlier -
ns1._tcp.mail.thesandiegos.com is a host name (because it is the target
of an NS record) but underscores are not allowed in hostnames. This
restriction does not apply to TLSA records.

f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
Rockall, Malin: West or southwest, veering north or northwest, 4 or 5,
occasionally 6 at first, becoming variable 3 or 4 later. Slight or moderate,
occasionally rough in north Rockall. Occasional rain at first. Moderate or

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