If it's a good idea to have a registry of DNS names with special
meanings, I'd rather see one RFC that establishes and populates
a registry of them, perhaps as an update to RFC 2606.
Such a registry might also usefully include names that have special
meanings within DNS names such as _<service> from 2782 and _domainkey
from 4871.
At this point I'm agnostic about the utility of adding SINK.ARPA to
such a registry, since I don't know how much in practice the "helpful"
rewriting of NXDOMAIN by some caches would interfere with its use.
R's,
John
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