Multiprotocol VPNs(e.g., mixture IPv6/IPv4 based VPNs)

• PE

• PE

• PE

• CE

• CE

• CE

• CE

• CE

• CE

• CE

• P

• P

• P

• P

VR-C

VR-A

VR-B

Backbone

VR-1

VPN A

IPv6

VPN B

IPv4

VPN C

IPv6

PE

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