2.3 WANIPConnection Extensions
The WANIPConnection service is specified in [UPNPWIPC]. Its service description is extended as follows, in the UPnP Template Language.
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<serviceStateTable> <stateVariable sendEvents="yes"> <name>X_Name</name> <dataType>string</dataType> </stateVariable> </serviceStateTable>
The following state variable is defined in the service description above:
X_Name: The interface alias of the external (WAN) interface of the Internet gateway device.