3.1.5.36 Extensions for transport address or ICE candidate attributes

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This section describes an SDP extension to allow a user agent to declare in an SDP offer or SDP answer additional information about a particular transport address or ICE candidate. In particular, this specification describes an extension to declare that an ICE candidate is allocated on a wireless LAN or wireless WAN network interface. This can be used for diagnostic purposes, or might be useful to the receiving user agent for other media-processing purposes. This information is declared using an x-candidate-info attribute.<64>