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CONTRIBUTING.md

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+# Contributing
+
+This repository relates to activities in the Internet Engineering Task Force
+([IETF](https://www.ietf.org/)). All material in this repository is considered
+Contributions to the IETF Standards Process, as defined in the intellectual
+property policies of IETF currently designated as
+[BCP 78](https://www.rfc-editor.org/info/bcp78),
+[BCP 79](https://www.rfc-editor.org/info/bcp79) and the
+[IETF Trust Legal Provisions (TLP) Relating to IETF Documents](http://trustee.ietf.org/trust-legal-provisions.html).
+
+Any edit, commit, pull request, issue, comment or other change made to this
+repository constitutes Contributions to the IETF Standards Process
+(https://www.ietf.org/).
+
+You agree to comply with all applicable IETF policies and procedures, including,
+BCP 78, 79, the TLP, and the TLP rules regarding code components (e.g. being
+subject to a Simplified BSD License) in Contributions.
+
+
+## Other Resources
+
+Discussion of this work occurs on the
+[mls working group mailing list](https://mailarchive.ietf.org/arch/browse/mls/)
+([subscribe](https://www.ietf.org/mailman/listinfo/mls)).  In addition to
+contributions in github, you are encouraged to participate in discussions there.
+
+**Note**: Some working groups adopt a policy whereby substantive discussion of
+technical issues needs to occur on the mailing list.
+
+You might also like to familiarize yourself with other
+[working group documents](https://datatracker.ietf.org/wg/mls/documents/).