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neatchee@lemmy.world ⁨6⁩ ⁨months⁩ ago

Sometimes redundancy doesn’t help when it comes to network traffic routing. That system is based heavily on trust and an incorrect route being published can cause recursive loops and such that get propagated very quickly to everyone.

There was a case like this a few years back where a bad route got published by a small ISP, claiming they could handle traffic to a certain set of destinations, but then immediately trying to send that traffic back out again (because they couldn’t actually route to that destination), which bounced right back to them because of the bad route. It was propagated based on implicit trust and took down huge chunks of the Internet for a while

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