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Lossless and overhead free DCCP - UDP header conversion (U-DCCP)

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Markus Amend , Anna Brunstrom , Andreas Kassler , Veselin Rakocevic
Last updated 2021-03-08 (Latest revision 2019-07-08)
RFC stream (None)
Intended RFC status (None)
Additional resources GitHub Repository
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The Datagram Congestion Control Protocol (DCCP) is a transport-layer protocol that provides upper layers with the ability to use non- reliable congestion-controlled flows. DCCP is not widely deployed in the Internet, and the reason for that can be defined as a typical example of a chicken-egg problem. Even if an application developer decided to use DCCP, the middle-boxes like firewalls and NATs would prevent DCCP end-to-end since they lack support for DCCP. Moreover, as long as the protocol penetration of DCCP does not increase, the middle-boxes will not handle DCCP properly. To overcome this challenge, NAT/NATP traversal and UDP encapsulation for DCCP is already defined. However, the former requires special middle-box support and the latter introduces overhead. The recent proposal of a multipath extension for DCCP further underlines the challenge of efficient middle-box passing as its main goal is to be applied over the Internet, traversing numerous uncontrolled middle-boxes. This document introduces a new solution which disguises DCCP during transmission as UDP without requiring middle-box modification or introducing any overhead.


Markus Amend
Anna Brunstrom
Andreas Kassler
Veselin Rakocevic

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