<div dir="ltr"><div dir="ltr">Yes, that's the underlying issue. A faulty BGP change caused a bunch of routes to be withdrawn, including the Facebook DNS servers, which they self host.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 4, 2021 at 5:37 PM Rich Lafferty via Outages <<a href="mailto:outages@outages.org">outages@outages.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">



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<div dir="auto">A carrier networking engineer friend of mine observed that the network that those DNS servers live in is no longer in the global routing table. Sounds like BGP issues rather than DNS ones, I guess. (I won’t admit to understanding BGP.)<br>
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  -Rich  </div>
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<div dir="auto"><b style="color:rgb(33,33,33);font-family:Helvetica,Arial,sans-serif;font-size:10px">Rich Lafferty</b><span style="color:rgb(33,33,33);font-family:Helvetica,Arial,sans-serif;font-size:10px"> </span><span style="font-size:10px"><br></span><a style="color:rgb(71,124,204);font-family:Helvetica,Arial,sans-serif;font-size:10px" href="mailto:rich@lafferty.ca" target="_blank">rich@lafferty.ca</a><span style="color:rgb(33,33,33);font-family:Helvetica,Arial,sans-serif;font-size:10px"> / 647-377-1165</span><span style="font-size:10px"><br></span><span style="color:rgb(33,33,33);font-family:Helvetica,Arial,sans-serif;font-size:10px">Toronto, Canada</span><span style="color:rgb(0,0,0);font-family:Helvetica,Arial,sans-serif;font-size:10px"> </span><span style="font-size:10px"><br></span><a style="color:rgb(71,124,204);font-family:Helvetica,Arial,sans-serif;font-size:10px" href="http://www.lafferty.ca" target="_blank">http://www.lafferty.ca</a><br>
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<div name="messageReplySection">On Oct 4, 2021, 1:14 PM -0300, Jon Sands via Outages <<a href="mailto:outages@outages.org" target="_blank">outages@outages.org</a>>, wrote:<br>
<blockquote type="cite" style="border-left:thin solid grey;margin:5px;padding-left:10px">Seems the <a href="http://facebook.com" target="_blank">facebook.com</a> domain no longer has any DNS records? Getting<br>
nxdomain from most clients, same when digging @ 1.1.1.1 8.8.8.8 etc<br>
<br>
<a href="https://toolbox.googleapps.com/apps/dig/#A/facebook.com" target="_blank">https://toolbox.googleapps.com/apps/dig/#A/facebook.com</a><br>
<br>
--<br>
Jon Sands<br>
MFI Labs<br>
<a href="https://fohdeesha.com/" target="_blank">https://fohdeesha.com/</a><br>
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