IPv6 source routing must be configured to highest protection.

From Windows 8 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

SV-48430r1_rule IPv6 source routing must be configured to highest protection.

Vulnerability discussion

Configuring the system to disable IPv6 source routing protects against spoofing.

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Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)" to "Highest protection, source routing is completely disabled".

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