Hi there,
On Sat, 16 Sep 2023, John Thurston wrote:
A host which auto-registers in MS DNS, creates an A in foo.alaska.gov
and PTR in whatever.10.in-addr.arpa. MS DNS is happy to publish those.
But the DNS system running on BIND also has a whatever.10.in-addr.arpa
zone.
So if I want to find the PTR for 13.12.11.10.in-addr.arpa, I must query
both DNS systems in turn. If I get NXDOMAIN from both, then I can say
the PTR doesn't exist.
On each system, I'd like to be able to take the 10.in-addr.arpa data
from the other, compute the differences, and incorporate them locally.
Then I'll be able to query either system, and accept an NXDOMAIN with
confidence.
Is there a reason not to split the /8 into two /9s or something like that?
Then you'd have no fragmentation (at least not for this reason) and you'd
always know who to ask.
And since writing my earlier note, I have re-located the code I think I
stumbled across earlier
Tony Finch's "nsdiff"
Does that mean problem replaced, if not solved?
--
73,
Ged.
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