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<div name="messageBodySection">I am seeing what looks like a possible routing loop or some other routing issue going on with Comcast’s backbone in Ashburn, VA. I am a customer in Western Pennsylvania and I am unable to reach certain destinations such as <a href="www.duckduckgo.com">www.duckduckgo.com</a>or <a href="www.google.org">www.google.org</a>. This has been going on for about an hour afaik. Traceroutes are playing ping pong between cr2.<a href="ashburn.va.ibone.comcast.net">ashburn.va.ibone.comcast.net</a>and either cs2 or cs4.<a href="ashburn.va.ibone.comcast.net">ashburn.va.ibone.comcast.net</a><br />
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An example MTR to <a href="www.duckduckgo.com">www.duckduckgo.com</a>.<br />
<br />
HOST: gravitron Loss% Snt Last Avg Best Wrst StDev<br />
1.|-- IRIDIUM 0.0% 100 0.7 0.9 0.6 6.8 0.7<br />
2.|-- 96.120.62.193 0.0% 100 8.0 9.4 7.4 15.3 1.9<br />
3.|-- 96.108.98.65 0.0% 100 8.9 9.7 7.3 19.4 2.2<br />
4.|-- 162.151.65.5 0.0% 100 9.8 10.3 5.6 17.3 1.9<br />
5.|-- be-7016-cr02.ashburn.va.i 0.0% 100 18.5 17.3 15.1 23.9 1.8<br />
6.|-- be-1402-cs04.ashburn.va.i 98.0% 100 15.2 15.3 15.2 15.5 0.2<br />
7.|-- be-1402-cr02.ashburn.va.i 97.0% 100 22.1 18.7 16.4 22.1 3.0<br />
8.|-- ??? 100.0 100 0.0 0.0 0.0 0.0 0.0<br />
9.|-- be-1402-cr02.ashburn.va.i 94.0% 100 18.2 17.7 16.2 21.4 1.9<br />
10.|-- be-1402-cs04.ashburn.va.i 99.0% 100 18.3 18.3 18.3 18.3 0.0<br />
11.|-- be-1402-cr02.ashburn.va.i 94.0% 100 18.7 20.2 16.1 30.4 5.1<br />
12.|-- ??? 100.0 100 0.0 0.0 0.0 0.0 0.0<br />
13.|-- be-1402-cr02.ashburn.va.i 93.9% 98 18.1 18.6 16.8 24.2 2.8<br />
14.|-- ??? 100.0 96 0.0 0.0 0.0 0.0 0.0<br />
15.|-- be-1402-cr02.ashburn.va.i 96.9% 96 16.7 17.6 16.7 18.7 1.0<br />
16.|-- ??? 100.0 83 0.0 0.0 0.0 0.0 0.0<br />
17.|-- be-1402-cr02.ashburn.va.i 95.2% 83 16.9 18.5 16.9 20.5 1.9<br />
18.|-- ??? 100.0 65 0.0 0.0 0.0 0.0 0.0<br />
19.|-- be-1402-cr02.ashburn.va.i 96.9% 65 17.5 17.0 16.6 17.5 0.6<br />
20.|-- ??? 100.0 54 0.0 0.0 0.0 0.0 0.0<br />
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I have no way of knowing if this is isolated to the mid-Atlantic region or if it’s a widespread issue. Interestingly enough, Downdetector is showing a large spike in down reports across a wide range of services all at the same time.<br />
<br />
Is anyone else experiencing this?<br />
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--<br />
Geoff<br />
AB3LS</div>
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