1. Introduction

RFC Editor text: <a href=https://www.rfc-editor.org/rfc/rfc8820.txt target=_blank rel="noopener noreferrer" class="">RFC 8820
Datatracker page: <a href=https://datatracker.ietf.org/doc/html/rfc8820 target=_blank rel="noopener noreferrer" class="">RFC 8820

This compatibility page replaces an old generated placeholder for RFC 8820. The authoritative text for this section is available in the official RFC sources.