Port Control Protocol (PCP) support for DS-Lite for CGNAT Next Gen Services

Port Control Protocol Support (PCP) for DS-Lite is supported for CGNAT Next Gen Services. DS-Lite is a technology which enables a broadband service provider to share IPv4 addresses among customers by combining two well-known technologies: IP in IP (IPv4-in-IPv6) and Network Address Translation (NAT). Typically, the home gateway embeds a Basic Bridging BroadBand (B4) capability that encapsulates IPv4 traffic into a IPv6 tunnel to the CGNAT, named the Address Family Transition Router (AFTR). AFTRs are run by service providers. PCP allows customer applications to create mappings in a NAT for new inbound communications destined to machines located behind a NAT. In a DS-Lite environment, PCP servers control AFTR devices.