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Routing Loops using ISATAP and 6to4 : Problem Statement and Proposed Solutions

Routing Loops using ISATAP and 6to4 : Problem Statement and Proposed Solutions. The Problem. Root Causes. A router does not know which end nodes currently participate in the tunnel. An attacker can easily spoof source addresses. Proposed Solutions. Neighbor cache check

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Routing Loops using ISATAP and 6to4 : Problem Statement and Proposed Solutions

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  1. Routing Loops using ISATAP and 6to4: Problem Statementand ProposedSolutions

  2. The Problem

  3. Root Causes • A router does not know which end nodes currently participate in the tunnel. • An attacker can easily spoof source addresses.

  4. Proposed Solutions • Neighbor cache check • Destination and source address check • Known IPv4 prefix check • Known IPv6 address check • Known IPv4 router addresses

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