Abstract: Network Address Port Translation (NAPT) may be selectively applied to data traffic through a gateway in a communications network. The data traffic may be received at a primary gateway in the communications network. The primary gateway may then analyze the received data traffic to determine a network path. The primary gateway may then determine whether to apply NAPT to the received data traffic based on whether the network path terminates at a first service provider network or a second service provider network. The primary gateway may apply NAPT on the received data traffic upon determining that the network path terminates at the first service provider network or bridge the received data traffic to a secondary gateway upon determining that the network path terminates at the second service provider network.

Abstract: A gateway may be utilized to assign Internet protocol (IP) addresses to client devices in a shared subnet. The gateway may include a dynamic host protocol configuration (DHCP) proxy server. The proxy server may receive discover messages from the client devices. The proxy server may send proxy discover messages to a master DHCP server and receive offer messages containing IP addresses and local options. The proxy server may add/modify the local options to create proxy offer messages, send the proxy offer messages to the client devices and receive IP address request messages from the client devices. The proxy server may send proxy IP address request messages to the master DHCP server and receive acknowledgement messages. The proxy server may add/modify local options in the acknowledgement messages to create proxy acknowledgement messages and send the proxy acknowledgement messages to the client devices to assign the IP addresses and the local options.

Abstract: Network Address Port Translation (NAPT) may be selectively applied to data traffic through a gateway in a communications network. The data traffic may be received at a primary gateway in the communications network. The primary gateway may then analyze the received data traffic to determine a network path. The primary gateway may then determine whether to apply NAPT to the received data traffic based on whether the network path terminates at a first service provider network or a second service provider network. The primary gateway may apply NAPT on the received data traffic upon determining that the network path terminates at the first service provider network or bridge the received data traffic to a secondary gateway upon determining that the network path terminates at the second service provider network.

Abstract: A gateway may be utilized to assign Internet protocol (IP) addresses to client devices in a shared subnet. The gateway may include a dynamic host protocol configuration (DHCP) proxy server. The proxy server may receive discover messages from the client devices. The proxy server may send proxy discover messages to a master DHCP server and receive offer messages containing IP addresses and local options. The proxy server may add/modify the local options to create proxy offer messages, send the proxy offer messages to the client devices and receive IP address request messages from the client devices. The proxy server may send proxy IP address request messages to the master DHCP server and receive acknowledgement messages. The proxy server may add/modify local options in the acknowledgement messages to create proxy acknowledgement messages and send the proxy acknowledgement messages to the client devices to assign the IP addresses and the local options.