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L2TPv2 as the Immediate Solution L2TPv2 is currently used in several IPv6 over IPv4 deployments Implementations of key components are readily available: LNSes supporting L2TPv2 acting as tunnel terminator, supporting IPv6 over PPP (IPv6CP) and DHCPv6 server capabilities or proxy Standalone DHCPv6 server RADIUS support for IPv6 prefix delegation attributes CPEs or home routers supporting L2TPv2, IPv6 over PPP (IPv6CP) and DHCPv6 client capabilities Windows (i.e. Longhorn) supporting IPv6 over PPP and L2TPv2 over IPSec are becoming available in the near future The support for IPv4 over IPv6 with L2TPv2 requires the addition of IPv6 transport support for L2TPv2 (minor extension to RFC 2661). Besides that, IPv4 over PPP over L2TPv2 over IPv6 will work as in today’s L2TPv2 over IPv4 solutions |