Methods and devices for supporting simple Internet Protocol (IP) with address translation in a wireless communication device (WCD) are presented. The WCD may contain a translation module and an application module. The application module may be assigned a local IP address to which the application module binds. However, the translation module may attempt to hide the application module's use of this local address. Thus, the translation module may translate the source address of packets sent by the application module from the local IP address to a different IP address that has been assigned to the WCD by a Proxy Mobile IP (PMIP) gateway.