On 2016-07-08 18:34, Jun Xiang X Tee wrote:
Dear all,
I have a simple question here. Is it possible to have a TXT format
tuple appearing at the additional section?
For instance, the original dig query shows:
;; ADDITIONAL SECTION:
ns1.google.com. 271647 IN A 216.239.32.10
ns2.google.com. 259462 IN A 216.239.34.10
ns3.google.com. 295152 IN A 216.239.36.10
ns4.google.com. 254408 IN A 216.239.38.10
Is it possible to have something like this:
;; ADDITIONAL SECTION:
ns1.google.com. 271647 IN TXT "v=spf1 arbitrary
info that I wish to add"
ns2.google.com. 259462 IN TXT "v=spf1 arbitrary info
that I wish to add"
ns3.google.com. 295152 IN TXT "v=spf1 arbitrary info
that I wish to add"
ns4.google.com. 254408 IN TXT "v=spf1 arbitrary info
that I wish to add"
Haven't you asked what is essentially the same question over and over
before? At least, the answer is ultimately the same as you were given
before:
That's not really consistent with the DNS standards, and will break if
you have intermediate caching servers. Why? Because of this clause
from RFC 2181:
Unauthenticated RRs received and cached from the least trustworthy of
those groupings, that is data from the additional data section, and
data from the authority section of a non-authoritative answer, should
not be cached in such a way that they would ever be returned as
answers to a received query.
It'll also, irrespective of caching, break DNSSEC.
Whatever you're trying to do, this is not the right way to do it; you
cannot arbitrarily add data to zones that are not under your control.
What are you trying to do? And why?
--
Dave Warren
http://www.hireahit.com/
http://ca.linkedin.com/in/davejwarren
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