The Problem:Any AS May Inject Any Prefix

• Mistakenly

  • 7007, the BGP->RIP->BGP reinjection
  • UUNET’s 128/7 leak
  • daily, someone’s prefix is mis-announced by another AS
  • bogon leaks: 0/0, 10/8,

• Maliciously

  • very damaging denial of service attack

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