Technical Summary
This document changes the recommended default Interface Identifier
(IID) generation scheme for cases where Stateless Address
Autoconfiguration (SLAAC) is used to generate a stable IPv6 address.
It recommends using the mechanism specified in RFC7217 in such cases,
and recommends against embedding stable link-layer addresses in IPv6
Interface Identifiers. It formally updates RFC2464, RFC2467, RFC2470,
RFC2491, RFC2492, RFC2497, RFC2590, RFC3146, RFC3572, RFC4291,
RFC4338, RFC4391, RFC5072, and RFC5121. This document does not change
any existing recommendations concerning the use of temporary addresses
as specified in RFC 4941.
Working Group Summary
There is strong support for this document in the 6MAN working group.
The area where there was controversy was about what the updates to the
documents that define how IIDs should be created, e.g., RFC2464) for
specific link types. The current draft represents the working group
thinking and there is a strong consensus.
Document Quality
The quality of the document is good, it has received a lot of
review in the working group on the mailing list and at several 6man
sessions at IETF meetings. The number of drafts that have been
produced (15) is one sign of this.
There are implementations of the recommendation that nodes should not
employ IPv6 address generation schemes that embed a stable link-layer
address in the IID. This includes recent versions of Windows, iOS, and
Android.
Personnel
Bob Hinden is the Document Shepherd.
Suresh Krishnan is the Responsible Area Director.
RFC Editor Note
RFC Editor Note
Please make the following substitution in Section 2
OLD:
Stable address:
An address that does not vary over time within the same network
(as defined in [RFC7721]).
NEW:
Stable address:
An address that does not vary over time within the same network
(consistent with [RFC7721]).