RFC 5747: 4over6 Transit Solution Using IP Encapsulation and MP-BGP Extensions

The emerging and growing deployment of IPv6 networks will introduce cases where connectivity with IPv4 networks crossing IPv6 transit backbones is desired.…

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Outgoing relationships (7 related RFCs)

Normative reference — RFC 4271: A Border Gateway Protocol 4 (BGP-4)
Normative reference — RFC 4760: Multiprotocol Extensions for BGP-4
Normative reference — RFC 2473: Generic Packet Tunneling in IPv6 Specification
Normative reference — RFC 5512: The BGP Encapsulation Subsequent Address Family Identifier (SAFI) and the BGP Tunnel Encapsulation Attribute
Normative reference — RFC 4925: Softwire Problem Statement
Normative reference — RFC 5565: Softwire Mesh Framework
Normative reference — RFC 5549: Advertising IPv4 Network Layer Reachability Information with an IPv6 Next Hop