[dns-operations] DNS request for ./NS with two extra bytes at the end

Mark Andrews marka at isc.org
Fri May 27 09:12:27 UTC 2022

But you can return FORMERR.   That said Microsoft used two bytes at the end of an AXFR request to signal multi record messages where accepted.  These days it should be a EDNS option.  

Mark Andrews

> On 27 May 2022, at 11:59, Frank Habicht <geier at geier.ne.tz> wrote:
> On 26/05/2022 22:37, John Levine wrote:
>> It appears that Brown, William <wbrown at e1b.org> said:
>>> -=-=-=-=-=-
>>> It made sense 40 years ago when it was written.  In today’s security environment,  it does not.
>> It made sense and still makes sense when you know what Postel meant.
>> Be liberal in what you accept when the specification is ambiguous, not
>> accept any random garbage and try to guess what it means.
> I also want to interpret it as "be resilient to anything thrown at you".
> Frank
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