[dns-operations] F-Root and DNS Cookies?

Dave Lawrence tale at dd.org
Wed Apr 14 22:36:39 UTC 2021


A few recent analyses I've done at DNSViz have had warnings like
these:

   com/DS (alg 8, id 30909): The server appears to support DNS 
   cookies but did not return a COOKIE option. (192.5.5.241,
   UDP_-_EDNS0_4096_D_KN)

Now I realize that F-Root is a large, heterogeneous set.   Any idea
which software is causing that?



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