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Pakistan bans Youtube due to offensive contents(to Islam).

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This revealed a critical weakness in routing structure in the internet at the highest level possible.

 

A system previously built on trust, guess that won't fly anymore. most likely they were trying to prevent internal traffic from getting to youtube but they affected much more.

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^ if that is correct, these are two unrelated incidents because the original fault was not that of youtube.

 

Pakistan Telecom was advertising a route to youtube with a more specific mask, that entry somehow made its way onto the routing tables of a handful of the highest level BGP routers (internet backbone).

 

In other words for a brief period when any browser requested www.youtube.com the request was being diverted to Pakistan instead of the rightful owners of the address youtube.Their intentions were most likely to only redirect internal (within pakistan)traffic intended for youtube.

 

Pakistan bans youtube sounds much better as a title but is not correct technically , this is just a problem of scale, their traffic engineering efforts went beyond their intentions, the fault partially lies with the upstream providers because a single ISP should not have had this capability.

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