Method for communicating in an IP network, comprising the following steps: a) a first communicating device initializes a communication with a second communicating device, while signalling to said second communicating device that said first communicating device is compatible with multi-path communications relying on the UDP (User Datagram Protocol) transport protocol, a multi-path UDP communication established between the first and second communicating devices being composed of several simple UDP communications and being likely to follow several distinct paths between these two communicating devices simultaneously, and b) if the second communicating device is itself also compatible with multi-path UDP communications: - the first communicating device sends payload data to the second device using the UDP transport protocol, by including, in the UDP datagrams containing these payload data regardless of the path that is used, one and the same identifier, called context identifier (Context _ID), allowing the second communicating device to correlate all of said UDP datagrams associated with one and the same multi-path UDP communication having followed distinct paths, and/or - the second communicating device sends payload data to the first device using the UDP transport protocol, by including, in the UDP datagrams containing these payload data regardless of the path that is used, one and the same identifier, called context identifier (Context _ID), allowing the first communicating device to correlate all of said UDP datagrams associated with one and the same multi-path UDP communication having followed distinct paths. a) a first communicating device initializes a communication with a second communicating device, while signalling to said second communicating device that said first communicating device is compatible with multi-path communications relying on the UDP (User Datagram Protocol) transport protocol, a multi-path UDP communication established between the first and second communicating devices being composed of several simple UDP communications and being likely to follow several distinct paths between these two communicating devices simultaneously, and b) if the second communicating device is itself also compatible with multi-path UDP communications: - the first communicating device sends payload data to the second device using the UDP transport protocol, by including, in the UDP datagrams containing these payload data regardless of the path that is used, one and the same identifier, called context identifier (Context _ID), allowing the second communicating device to correlate all of said UDP datagrams associated with one and the same multi-path UDP communication having followed distinct paths, and/or - the second communicating device sends payload data to the first device using the UDP transport protocol, by including, in the UDP datagrams containing these payload data regardless of the path that is used, one and the same identifier, called context identifier (Context _ID), allowing the first communicating device to correlate all of said UDP datagrams associated with one and the same multi-path UDP communication having followed distinct paths. - the first communicating device sends payload data to the second device using the UDP transport protocol, by including, in the UDP datagrams containing these payload data regardless of the path that is used, one and the same identifier, called context identifier (Context _ID), allowing the second communicating device to correlate all of said UDP datagrams associated with one and the same multi-path UDP communication having followed distinct paths, and/or - the second communicating device sends payload data to the first device using the UDP transport protocol, by including, in the UDP datagrams containing these payload data regardless of the path that is used, one and the same identifier, called context identifier (Context _ID), allowing the first communicating device to correlate all of said UDP datagrams associated with one and the same multi-path UDP communication having followed distinct paths.