DS-Lite NAT444

DS-Lite combines tunneling and NAT to allow an IPv4 private network to access the IPv4 public network over an IPv6 network. For more information about DS-Lite, see "Configuring tunneling."

DS-Lite NAT444 is configured on the AFTR and performs dynamic NAT444 based on the B4 element. The B4 element refers to a B4 router or a DS-Lite host. DS-Lite NAT444 dynamically maps a public IPv4 address and a port block to the IPv6 address of the B4 element. The DS-Lite host or hosts behind the B4 router use the mapped public IPv4 address and port block to access the public IPv4 network.

DS-Lite NAT444 supports user tracing for DS-Lite hosts based on the port block.