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L2TPv3 as Next Phase Softwires Solution IP over L2TPv3 L2TPv3 also offers a more optimal softwires solution with its capability to directly tunnel IP frames IP Pseudowire support: draft-ietf-l2tpext-pwe3-ip-01 IP Pseudowire Type has the following advantages Not necessary to negotiate PPP at session initiation Not necessary to include PPP encap in data Authentication is available at the tunnel level Implies one session per tunnel New AVPs to provide basic IPCP / IPv6CP Address assignment services are required |