Roy Arends writes:
> But there are some instances that emit A6 outside of the 8.3/9.2
> set.
Not what I see. I looked at the most active sources of A6 queries in
a trace of 100'000 UDP DNS requests to a TLD server here. For many of
the queriers, I was unable to determine the software versions, but
those that did tell me a BIND version, all except two claimed to be
9.2 or 8.3 versions. The two exceptions claim to run 8.2.2-P1 - those
are somewhat strange, because I didn't think 8.2.2 had A6 support.
$ tshark -n -r ~/dns/dns-query-trace.pcap | awk '/query A6 / { print $3 }' >
~/dns/a6-query-sources.txt
$ for x in `sort -n ~/dns/a6-query-sources.txt | uniq -c | sort -n | tail -50 |
awk '{ print $2 }'`; do dig +short @$x chaos txt version.bind.; done
"9.2.2"
;; connection timed out; no servers could be reached
"9.2.4"
"surely you must be joking"
"9.2.2"
"9.2.6-P2"
"Public DNS server v28.3.2. Keep your hands off!"
"9.2.5"
"9.2.3"
"not available"
;; connection timed out; no servers could be reached
"ZZZ"
"9.2.6"
"DNS server"
;; connection timed out; no servers could be reached
"8.2.2-P1"
"8.3.3-REL-NOESW"
"9.2.8"
;; connection timed out; no servers could be reached
"9.2.4"
"ip-plus"
"9.2.2"
"DNS Server"
"9.2.3"
"8.2.2-P1"
;; connection timed out; no servers could be reached
"Nice try..."
;; connection timed out; no servers could be reached
"9.2.1"
"9.2.4"
"9.2.6-P1"
"9.2.6"
"9.2.8"
"9.2.4"
;; connection timed out; no servers could be reached
"ip-plus"
;; connection timed out; no servers could be reached
"8.3.3-REL"
"None of your business"
;; connection timed out; no servers could be reached
"DNS"
;; connection timed out; no servers could be reached
"9.2.8"
"None of your business!"
"9.2.3"
--
Simon.
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