Probing MPTCP Subflows

Document Type Expired Internet-Draft (individual)
Authors Mohamed Boucadair  , Christian Jacquenet 
Last updated 2016-01-07 (latest revision 2015-07-06)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies an extension to Multipath TCP (MPTCP) that is meant to assess whether a path used to establish a given subflow is MPTCP-friendly, i.e., intermediate nodes involved in that path do not alter nor strip MPTCP options, which would prevent the establishment of MPTCP communications along that path. A new flag bit, called Probe Flag (P-flag) is defined for this purpose. This document updates RFC6824.


Mohamed Boucadair (
Christian Jacquenet (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)