[dns-operations] Limit on Name Servers & their IPs for a sub-domain

[Warren Kumari]

... and more on this topic: "RSSAC028 Technical Analysis of the Naming
Scheme Used For Individual Root Servers" --
https://www.icann.org/en/system/files/files/rssac-028-03aug17-en.pdf

More detail than any sane person would want on the topic :-P
W

On Fri, Jan 12, 2018 at 8:18 PM, Mark Andrews <marka at isc.org> wrote:
> Makes basically no difference.
>
> All but the first NS record takes 15 byte.  2 byte label + compression pointer.
> Each A record takes 16 bytes.
> Each AAAA record takes 28 bytes.
>
> Going from *.root-servers.org -> *.r saves 15 bytes in the first NS record.
>
>> On 13 Jan 2018, at 10:56 am, Rubens Kuhl <rubensk at nic.br> wrote:
>>
>>
>>
>>> On 12 Jan 2018, at 10:06, James Stevens <James.Stevens at jrcs.co.uk> wrote:
>>>
>>> On 12/01/18 01:19, George Michaelson wrote:
>>>> 11 servers. 11 labels. 11 named entities, each with a single IPv6 binding..
>>>
>>> In a world of IPv6 only, then can't you also safely assume an end-to-end MTU of 1280 and EDNS0 support - so would 11 still be the magic number?
>>>
>>
>>
>> Only if the servers are of the *.root-servers.net format. They could be *.root-servers or *.root or *.rz or *.r and then a different number of them would fit into a given MTU, whether 512 or 1280.
>>
>>
>>
>>
>> Rubens
>>
>>
>>
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>
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742              INTERNET: marka at isc.org
>
>
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-- 
I don't think the execution is relevant when it was obviously a bad
idea in the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair
of pants.
   ---maf