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IPv4 over IPv6 Softwire with L2TPv2: Case 2 – Router behind CPE as Softwire Initiator LNS CPE Dual AF Router IPv6 IPCP: assigns global IPv4 address and DNS, etc Private IPv4 addresses and DNS, etc. DHCP ISP to Dual AF Router IP Assignment and Auto-Config Dual AF Router to Hosts IP Assignment and Auto-Config IPv4 o PPP L2TPv2 o UDP o IPv6 |