Google's "unusual traffic" notification

Templin, Fred L Fred.L.Templin at
Thu Jul 25 18:01:53 CEST 2013

Hi John,

If you suspect an ISATAP problem, I would like to understand it better because
I am not aware of any outstanding issues. Also, please refer to RFC6964 which
gives: "Operational Guidance for IPv6 Deployment in IPv4 Sites Using the Intra-Site
Automatic Tunnel Addressing Protocol (ISATAP)".

Thanks - Fred

From: Brzozowski, John Jason [mailto:jjmb at]
Sent: Wednesday, July 24, 2013 6:17 PM
To: Templin, Fred L
Cc: Tore Anderson; ipv6-ops at
Subject: RE: Google's "unusual traffic" notification

My case was ISATAP related. Perhaps specific to my deployment.
On Jul 24, 2013 1:52 PM, "Templin, Fred L" <Fred.L.Templin at<mailto:Fred.L.Templin at>> wrote:
Hi John - are saying that you are suspecting an ISATAP problem?

Thanks - Fred

From: at< at> [mailto:ipv6-ops-bounces+fred.l.templin<mailto:ipv6-ops-bounces%2Bfred.l.templin> at< at>] On Behalf Of Brzozowski, John Jason
Sent: Wednesday, July 24, 2013 10:27 AM
To: Tore Anderson
Cc: ipv6-ops at<mailto:ipv6-ops at>
Subject: Re: Google's "unusual traffic" notification

We have seen this in the past from corporate desktop blocks used for ISATAP.  I found this to be strange.  Note I have not seen this for some time.

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