APPARATUS, METHOD, AND COMPUTER PROGRAM

An apparatus including at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured, with the at least one processor, to cause the apparatus at least to: receiving a user equipment internet protocol address allocated by a core network; receiving a network address translated user equipment internet protocol address allocated by a network address translation function; and mapping the user equipment internet protocol address allocated by the core network to the network address translated user equipment internet protocol address allocated by the network address translation function.