[dns-operations] is there anyone from microsoft on the list?
fujiwara at jprs.co.jp
fujiwara at jprs.co.jp
Thu Mar 18 03:39:37 UTC 2010
ns[1-5].msft.net configuration continues for five years or more.
I sometimes checked it because I interested this configuration.
At a certain time, ns4.msft.net answers EDNS0 queries, but then,
it was closed.
Recent full resolvers does not seem to be affected by this configuration.
(or little affected)
I want to know what problem do you have.
I believed that this problem was terrible five years ago, but it does
not affect BIND 9 full resolver. Then I thought it is unique/good example.
This configuration affects BIND 8 full resolver performance if there
are many clients which queries this ownername.
Regards,
--
Kazunori Fujiwara, JPRS <fujiwara at jprs.co.jp>
> From: Robert Edmonds <edmonds at isc.org>
> ns[1-5].msft.net are broken; they set the TC bit on certain UDP
> responses but do not respond to TCP queries.
>
> microsoft.com has address 207.46.197.32
> microsoft.com has address 207.46.232.182
> microsoft.com mail is handled by 10 mail.messaging.microsoft.com.
>
> 46.207.in-addr.arpa. 86400 IN NS ns1.msft.net.
> 46.207.in-addr.arpa. 86400 IN NS ns2.msft.net.
> 46.207.in-addr.arpa. 86400 IN NS ns5.msft.net.
> 46.207.in-addr.arpa. 86400 IN NS ns4.msft.net.
> 46.207.in-addr.arpa. 86400 IN NS ns3.msft.net.
> ;; Received 142 bytes from 2001:500:31::63#53(x.arin.net) in 105 ms
>
> $ dig +norec @ns1.msft.net -x 207.46.197.32
> ;; Truncated, retrying in TCP mode.
>
> ; <<>> DiG 9.7.0 <<>> +norec @ns1.msft.net -x 207.46.197.32
> ; (1 server found)
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
>
> packet capture is attached.
>
> --
> Robert Edmonds
> edmonds at isc.org
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