< draft-ietf-tls-dtls-rrc-03.txt		draft-ietf-tls-dtls-rrc-04.txt >
	TLS H. Tschofenig, Ed.		TLS H. Tschofenig, Ed.
	Internet-Draft T. Fossati, Ed.		Internet-Draft T. Fossati, Ed.
	Updates: 6347 (if approved) Arm Limited		Updates: 6347 (if approved) Arm Limited
	Intended status: Standards Track December 21, 2021		Intended status: Standards Track December 21, 2021
	Expires: June 24, 2022		Expires: June 24, 2022
	Return Routability Check for DTLS 1.2 and DTLS 1.3		Return Routability Check for DTLS 1.2 and DTLS 1.3
	draft-ietf-tls-dtls-rrc-03		draft-ietf-tls-dtls-rrc-04
	Abstract		Abstract
	This document specifies a return routability check for use in context		This document specifies a return routability check for use in context
	of the Connection ID (CID) construct for the Datagram Transport Layer		of the Connection ID (CID) construct for the Datagram Transport Layer
	Security (DTLS) protocol versions 1.2 and 1.3.		Security (DTLS) protocol versions 1.2 and 1.3.
	Status of This Memo		Status of This Memo
	This Internet-Draft is submitted in full conformance with the		This Internet-Draft is submitted in full conformance with the
	skipping to change at page 2, line 36 ¶		skipping to change at page 2, line 36 ¶
	5.3. Timer Choice . . . . . . . . . . . . . . . . . . . . . . 6		5.3. Timer Choice . . . . . . . . . . . . . . . . . . . . . . 6
	6. Example . . . . . . . . . . . . . . . . . . . . . . . . . . . 7		6. Example . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
	7. Security and Privacy Considerations . . . . . . . . . . . . . 10		7. Security and Privacy Considerations . . . . . . . . . . . . . 10
	8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10		8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
	9. Open Issues . . . . . . . . . . . . . . . . . . . . . . . . . 10		9. Open Issues . . . . . . . . . . . . . . . . . . . . . . . . . 10
	10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10		10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
	11. References . . . . . . . . . . . . . . . . . . . . . . . . . 10		11. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
	11.1. Normative References . . . . . . . . . . . . . . . . . . 10		11.1. Normative References . . . . . . . . . . . . . . . . . . 10
	11.2. Informative References . . . . . . . . . . . . . . . . . 11		11.2. Informative References . . . . . . . . . . . . . . . . . 11
	Appendix A. History . . . . . . . . . . . . . . . . . . . . . . 12		Appendix A. History . . . . . . . . . . . . . . . . . . . . . . 12
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 12		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 13
	1. Introduction		1. Introduction
	In "classical" DTLS, selecting a security context of an incoming DTLS		In "classical" DTLS, selecting a security context of an incoming DTLS
	record is accomplished with the help of the 5-tuple, i.e. source IP		record is accomplished with the help of the 5-tuple, i.e. source IP
	address, source port, transport protocol, destination IP address, and		address, source port, transport protocol, destination IP address, and
	destination port. Changes to this 5 tuple can happen for a variety		destination port. Changes to this 5 tuple can happen for a variety
	reasons over the lifetime of the DTLS session. In the IoT context,		reasons over the lifetime of the DTLS session. In the IoT context,
	NAT rebinding is common with sleepy devices. Other examples include		NAT rebinding is common with sleepy devices. Other examples include
	end host mobility and multi-homing. Without CID, if the source IP		end host mobility and multi-homing. Without CID, if the source IP
	skipping to change at page 12, line 9 ¶		skipping to change at page 12, line 9 ¶
	[RFC9000] Iyengar, J., Ed. and M. Thomson, Ed., "QUIC: A UDP-Based		[RFC9000] Iyengar, J., Ed. and M. Thomson, Ed., "QUIC: A UDP-Based
	Multiplexed and Secure Transport", RFC 9000,		Multiplexed and Secure Transport", RFC 9000,
	DOI 10.17487/RFC9000, May 2021,		DOI 10.17487/RFC9000, May 2021,
	<https://www.rfc-editor.org/info/rfc9000>.		<https://www.rfc-editor.org/info/rfc9000>.
	Appendix A. History		Appendix A. History
	[[CREF1: RFC EDITOR: PLEASE REMOVE THIS SECTION]]		[[CREF1: RFC EDITOR: PLEASE REMOVE THIS SECTION]]
			draft-ietf-tls-dtls-rrc-04
			- Re-submitted draft to fix references
			draft-ietf-tls-dtls-rrc-03
			- Added details for challenge-response exchange
	draft-ietf-tls-dtls-rrc-02		draft-ietf-tls-dtls-rrc-02
	- Undo the TLS flags extension for negotiating RRC, use a new		- Undo the TLS flags extension for negotiating RRC, use a new
	extension type		extension type
	draft-ietf-tls-dtls-rrc-01		draft-ietf-tls-dtls-rrc-01
	- Use the TLS flags extension for negotiating RRC		- Use the TLS flags extension for negotiating RRC
	- Enhanced IANA consideration section		- Enhanced IANA consideration section
End of changes. 3 change blocks.
	2 lines changed or deleted		10 lines changed or added
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