A device, comprising: one or more processors to: receive, from a first device that supports internet protocol version 4 "IPv4", a port control protocol, "PCP" request that includes a customer side translator "CLAT" prefix and one or more private IPv4 addresses, the CLAT prefix and the one or more private IPv4 addresses being included in an option portion associated with a PCP header, the PCP request being received via an internet protocol version 6 "IPv6" network; establish an association between the CLAT prefix and the one or more private IPv4 addresses; provide, to the first device, a PCP response indicating that the PCP request has been received by the device; receive, from the first device and via the IPv6 network, a packet that includes a first instance of a private IPv4 address of the one or more private IPv4 addresses and an IPv6 address, the IPv6 address including the CLAT prefix and a second instance of the private IPv4 address, where the device uses an application layer gateway "ALG", the first instance of the private IPv4 address being included in a payload of the packet, and the IPv6 address being included in a header of the packet; translate the first instance of the private IPv4 address to a public IPv4 address based on the CLAT prefix received in the PCP request and the IPv6 address, where the one or more processors, when translating the private IPv4 address to the public IPv4 address, are to: remove the CLAT prefix received in the PCP request from the IPv6 address, identify the second instance of the private IPv4 address based on removing the CLAT prefix, assign a public IPv4 address to the second instance of the private IPv4 address, update a data structure to associate the second instance of the private IPv4 address and the assigned public IPv4 address, search the payload of the packet to identify the private IPv4 address, and replace the private IPv4 address included in the payload with the assigned public IPv4 address based on the data structure; translate the packet from an IPv6 packet to an IPv4 packet; and provide the IPv4 packet that includes the public IPv4 address to a second device that supports IPv4. receive, from a first device that supports internet protocol version 4 "IPv4", a port control protocol, "PCP" request that includes a customer side translator "CLAT" prefix and one or more private IPv4 addresses, the CLAT prefix and the one or more private IPv4 addresses being included in an option portion associated with a PCP header, the PCP request being received via an internet protocol version 6 "IPv6" network; establish an association between the CLAT prefix and the one or more private IPv4 addresses; provide, to the first device, a PCP response indicating that the PCP request has been received by the device; receive, from the first device and via the IPv6 network, a packet that includes a first instance of a private IPv4 address of the one or more private IPv4 addresses and an IPv6 address, the IPv6 address including the CLAT prefix and a second instance of the private IPv4 address, where the device uses an application layer gateway "ALG", the first instance of the private IPv4 address being included in a payload of the packet, and the IPv6 address being included in a header of the packet; where the device uses an application layer gateway "ALG", the first instance of the private IPv4 address being included in a payload of the packet, and the IPv6 address being included in a header of the packet; translate the first instance of the private IPv4 address to a public IPv4 address based on the CLAT prefix received in the PCP request and the IPv6 address, where the one or more processors, when translating the private IPv4 address to the public IPv4 address, are to: remove the CLAT prefix received in the PCP request from the IPv6 address, identify the second instance of the private IPv4 address based on removing the CLAT prefix, assign a public IPv4 address to the second instance of the private IPv4 address, update a data structure to associate the second instance of the private IPv4 address and the assigned public IPv4 address, search the payload of the packet to identify the private IPv4 address, and replace the private IPv4 address included in the payload with the assigned public IPv4 address based on the data structure; remove the CLAT prefix received in the PCP request from the IPv6 address, identify the second instance of the private IPv4 address based on removing the CLAT prefix, assign a public IPv4 address to the second instance of the private IPv4 address, update a data structure to associate the second instance of the private IPv4 address and the assigned public IPv4 address, search the payload of the packet to identify the private IPv4 address, and replace the private IPv4 address included in the payload with the assigned public IPv4 address based on the data structure; translate the packet from an IPv6 packet to an IPv4 packet; and provide the IPv4 packet that includes the public IPv4 address to a second device that supports IPv4.