[dns-operations] Any surveys about EDNS0 usage?

Mark Andrews marka at isc.org
Mon Mar 7 21:56:01 UTC 2011

In message <d9c7cffca7ed02ae3bae0e8cb6b9e578.squirrel at webmail.aminor.no>, "Eivi
nd Olsen" writes:
> I hope this is an ok list to post this question to. If not, does anyone
> know of a more suitable list?
> Has anyone seen / done any surveys about EDNS0 usage? What kind of
> percentages should one typically see of EDNS0-enabled queries going to a
> recursive nameserver, compared to the total number of queries received?
> RFC 2671 is now > 11 years old, but how common are EDNS0 capable stub
> resolvers really, in the wild?

Do you want capable or in use?  They are very different figures.

Adding "options edns0" to resolve.conf will enable it on most boxes
with libresolv / libbind.

> Regards
> Eivind Olsen
> eivind at aminor.no
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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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