<div dir="ltr"><br><div>All it takes, technically, is for peers to stop accepting prefixes from that ASN, whether by policy changes, or termination of the BGP neighbor relationship.</div><div><br></div><div>The challenge is coordinating multiple players to do it at the same time.</div><div>It doesn't work if I do it today, you do it tomorrow, a third peer does it the day after; the internet just routes around sub-optimal pathing in the meantime.</div><div><br></div><div>The only thing an ASN can do to stop it is to wave money at a transit provider, and say "hey, I'm giving you money, make sure my prefixes propagate out as far as you can send them."</div><div><br></div><div>The Internet works through collective good will and contracts backed by money.</div><div>If at any point, you've done enough bad things that *nobody* wants to connect to you for any amount of money, you don't exist on the Internet anymore.</div><div><br></div><div>Until that point, it's just an exercise in sub-optimal routing.</div><div><br></div><div>The legal aspect only comes into play when you try to convince multiple commercial providers to act in concert to enforce a single policy with respect to the target network.</div><div>The Sherman Act in the US, for example, explicitly forbids this: "<span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">"[e]very contract, combination in the form of trust or otherwise, or conspiracy, in restraint of trade or commerce." </span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">This targets two or more distinct enterprises acting together in a way that harms third parties." -- </span><a href="https://en.wikipedia.org/wiki/United_States_antitrust_law#Cartels_and_collusion">https://en.wikipedia.org/wiki/United_States_antitrust_law#Cartels_and_collusion</a></div><div><br></div><div>As long as every other BGP speaking entity comes to the decision *independently*, there's no legal edict against it.</div><div>It's just that it's very unlikely every BGP neighbor will come to that same decision at the same time, resulting in the complete disconnection of the target network from the rest of the Internet.</div><div>And once you try to coordinate a date on which everyone will take action...you've crossed the legal line into illegal restraint of trade.</div><div><br></div><div>So...technically easy. Legally, very tough to do in a technically effective manner.</div><div><br></div><div>Matt</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 25, 2022 at 3:22 PM Chapman, Brad (NBCUniversal) <<a href="mailto:Brad.Chapman@nbcuni.com">Brad.Chapman@nbcuni.com</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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<p class="MsoNormal">Hello Outages-Discussion,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">As a hypothetical exercise, what would it take—technically, legally, or otherwise—to disconnect a single autonomous system from the rest of the world for "disruptive activity" originating from that entity, and is such disconnection allowed
under certain cases, like cyberattacks, terrorism, or threats of the same?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">And what could said entity do—technically, legally, or otherwise—to stop the withdrawal of routes connecting to it?
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Do existing telecommunications laws in Western Europe and the US generally
<u>require</u> the free and open connection of autonomous systems regardless of what is transmitted across them? The FCC Net Neutrality rules are the closest legal framework I could find.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">The example I had in mind for today is <a href="https://bgp.he.net/AS13414" target="_blank">
AS13414</a>.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Would love to hear everyone's thoughts on this and if it's ever been done before.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Cheers,<u></u><u></u></p>
<p class="MsoNormal">Brad<u></u><u></u></p>
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