Resource Records for EUI-48 and EUI-64 Addresses in the DNS
RFC 7043, “Resource Records for EUI-48 and EUI-64 Addresses in the DNS”, is an Informational document published in October 2013 by J. Abley. The canonical text is published by the RFC Editor.
Abstract
48-bit Extended Unique Identifier (EUI-48) and 64-bit Extended Unique Identifier (EUI-64) are address formats specified by the IEEE for use in various layer-2 networks, e.g., Ethernet.
This document describes two new DNS resource record types, EUI48 and EUI64, for encoding Ethernet addresses in the DNS.
This document describes potentially severe privacy implications resulting from indiscriminate publication of link-layer addresses in the DNS. EUI-48 or EUI-64 addresses SHOULD NOT be published in the public DNS. This document specifies an interoperable encoding of these address types for use in private DNS namespaces, where the privacy concerns can be constrained and mitigated.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 7043 is hosted at rfc-editor.org. Available in TXT,HTML.
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