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They're not that simple due to aggressive speed optimizations like caching frequently used routing information in hardware registers. If the cache gets corrupted due to electronic bogon flux, bad things happen. These events are rare (like once every billion operating hours) so you can imagine it's hard for the router vendors to find & fix them all.

It is a little sad that they didn't try rebooting the routers for so many hours.




> It is a little sad that they didn't try rebooting the routers for so many hours.

This assumes they're being literal and "corrupt" means "a bit randomly flipped" instead of using "corrupt" in the figurative sense of "operator error".




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