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draft-defeng-l3vpn-ipv4-ipv6-hybrid-01 Label Distribution (Method 1 for Case 1) Inherited from RFC 2547bis in every AS; MP-EBGP between ASBR1 and ASBR2 distributes the labels, and LSPs in AS1 and AS2 can be sticked ; Packet Forwarding (Method 1 for Case 1) Packets between sites-PE are forwarded following the IP protocol of the respective version(IPv4/IPv6) In the backbone packets can be forwarded on the sticked LSP |