1.6 Applicability Statement

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DirectPlay is designed for multiplayer gaming scenarios. These extensions can be used when additional NAT traversal support is desired for a DirectPlay 8 Protocol: Core and Service Providers gaming game session.

These extensions are used when running over IPv4. They are not to be implemented using IPv6. Instead, mechanisms such as the Teredo tunneling specification [RFC4380] address NAT traversal more generically under that protocol.