[dns-operations] Any surveys about EDNS0 usage?

[Robert Edmonds]

Joe Abley wrote:
> Wouldn't it be a reasonable measure of usage to see how many inbound
> queries to (say) a set of root servers over a reasonable period
> included the OPT pseudo-RR, and how many did not?
> 
> I appreciate there are other things to measure, but that (relatively
> simple) exercise would give an order-of-magnitude answer to the usage
> question. Shane and I did something like this a few dnsop meetings
> back, but it wasn't particularly exhaustive and we didn't check our
> work.

the original question was:
> 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?

i take this to mean queries with an EDNS0 OPT pseudo-RR generated by an
RD=1 initiator ("stub client"), rather than queries with an EDNS0 OPT
pseudo-RR generated by an RD=0 initiator ("recursive name server")?

-- 
Robert Edmonds
edmonds at isc.org