[dns-operations] Query to g.root-servers.net/192.112.36.4

Cassell, James D CIV DISA NS233 jcassell at nic.mil
Mon Mar 14 12:28:51 UTC 2011


George,

One of our g-root instances was experiencing performance problems caused by
its' receiving an abnormally high rate of queries.  We have taken measures
to correct this specific incident, and are also working on a more general,
long-term solution.

Jim Cassell
DoD NIC

    
From: "George Barwood" <george.barwood at blueyonder.co.uk>
To: <dns-operations at lists.dns-oarc.net>
Subject: [dns-operations] Query to g.root-servers.net/192.112.36.4
	timing out
Message-ID: <7B5521E310224268B96D77CB0C7EB232 at local>
Content-Type: text/plain;	charset="iso-8859-1"

When running the verisign tool

http://dnssec-debugger.verisignlabs.com/uk

quite often (maybe 1 in ten times) it reports timeouts when querying
g.root-servers.net, e.g.

"Query to g.root-servers.net/192.112.36.4 for ./DNSKEY timed out or failed"

I think this has been going on for some time.

My guess is that there may be some kind of network/firewall problem with
g.root-servers.net, although I don't see timeouts when I query directly.

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