Activating a peer-to-peer communication channel

Technology related to activating a peer-to-peer communication channel is disclosed. In one example of the disclosed technology, a method can be used to initiate peer-to-peer communications between a transmitting device and a receiving device over an inactive first communication channel. The method can include determining an address associated with a second communication channel of the receiving device. A packet addressed to the receiving device can be transmitted over the second communication channel to cause the receiving device to begin a sequence to activate the first communication channel. Communication can be initiated over the first communication channel from the transmitting device to the receiving device at a different address associated with the first communication channel.