Ray Bellis wrote on 2022-08-15 10:14:
On 13/08/2022 23:56, Paul Vixie wrote:
it's very much worth re-reading RFC 921 and RFC 952 to understand ...
STD 13 then effectively makes udp/53 and tcp/53 the de-facto wire
protocols for interrogating that system, mostly surplanting the use of
host files.
On that basis, I'm unable to separate the RFC 921 / 952 "Domain Name
System" namespace from the STD-13 one embodied in the ICANN-managed root
zone that we have now. I think they're the same thing.
your well chosen words ("effectively", "de-facto", and "mostly") are
important here. it was neither expected not desired that /etc/hosts
(which many of us autogenerated from HOSTS.TXT and added our local names
thereto) or YP/NIS or any other non-udp/53 non-tcp/53 name-to-address
translation capability would go out of use. indeed, there has Never been
a day since "domain style names" were first described when non-udp/53
non-tcp/53 naming systems systems were Not in wide use.
effectively + de-facto = 0 in this timeline. mostly > 0, to be sure.
if IETF decides at this late (2022) date to reserve part of the domain
style namespace for non-udp/53 non-tcp/53 uses, nothing will break. that
helps me understand the open ended _effective_ intent of STD-13, which
is to build roads not walls -- in the best tradition of the Internet.
--
P Vixie
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