[dns-operations] rfc7873#5.4 - Server Cookie Queries - any implementations at all?

Mark Delany b9w at charlie.emu.st
Mon Mar 14 08:51:47 UTC 2022


On 14Mar22, Mark Andrews allegedly wrote:

> Dig with the right arguments can make such queries.
> 
> [ant-3375:~/git/bind9] marka% dig +header-only +qr

Fantastic! Thanks mate!

>> 2022-03-14 18:42:22.399120500 ru=ne q=None/ s=[*redacted*]:47810 id=47863 h=UeE sz=51/0 C=0/0/1 Query Server Cookie
---------------------------------------------------------------------------------------------------^^^^^^^^^^^^^^^^^^^

The first legit #5.4 log entry not from my kludged-up client.


So at least I know my logging code is working with 3rd-party code, which gives me some
confidence that the zero-occurrences observations might be valid.


Mark.


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