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RFC 5453, "Reserved IPv6 Interface Identifiers", February 2009

Source of RFC: 6man (int)

Errata ID: 5589
Status: Reported
Type: Technical
Publication Format(s) : TEXT

Reported By: Brian Carpenter
Date Reported: 2019-01-02

Section 3 says:

   +-----------------------------------------+-------------------------+
   |        Interface Identifier Range       |       Description       |
   +-----------------------------------------+-------------------------+
   |           0000:0000:0000:0000           |  Subnet-Router Anycast  |
   |                                         |        [RFC4291]        |
   |                                         |                         |
   | FDFF:FFFF:FFFF:FF80-FDFF:FFFF:FFFF:FFFF | Reserved Subnet Anycast |
   |                                         |    Addresses[RFC2526]   |
   +-----------------------------------------+-------------------------+

                       Table 1: Current Assignments

It should say:

   +-----------------------------------------+-------------------------+
   |        Interface Identifier Range       |       Description       |
   +-----------------------------------------+-------------------------+
   |           0000:0000:0000:0000           |  Subnet-Router Anycast  |
   |                                         |        [RFC4291]        |
   |                                         |                         |
   | FDFF:FFFF:FFFF:FF80-FDFF:FFFF:FFFF:FFFF | Reserved Subnet Anycast |
   | FFFF:FFFF:FFFF:FF80-FFFF:FFFF:FFFF:FFFF |    Addresses[RFC2526]   |
   +-----------------------------------------+-------------------------+

                       Table 1: Current Assignments

Notes:

Both these ranges are in fact reserved by Section 2 of RFC2526. Under current recommendations [RFC7217] the FDFF range is no longer recommended for routine use, and the FFFF range is equally likely to occur in a pseudo-random 64-bit IID. Credit to Kerry Lynn for pointing this out.

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