RFC 6164, "Using 127-Bit IPv6 Prefixes on Inter-Router Links", April 2011

Note: This RFC has been updated by RFC 6547

Errata ID: 3422
Status: Verified
Type: Editorial
Publication Format(s) : TEXT
Reported By: Benjamin Cama
Date Reported: 2012-11-29
Verifier Name: Brian Haberman
Date Verified: 2012-11-29

Section 6 says:

   (b)  Addresses in which the rightmost 64 bits are assigned the
        highest 128 values (i.e., ffff:ffff:ffff:ff7f to ffff:ffff:ffff:
        ffff) SHOULD NOT be used as unicast addresses, to avoid
        colliding with reserved subnet anycast addresses [RFC2526].

It should say:

   (b)  Addresses in which the rightmost 64 bits are assigned the
        highest 128 values (i.e., ffff:ffff:ffff:ff80 to ffff:ffff:ffff:
        ffff) SHOULD NOT be used as unicast addresses, to avoid
        colliding with reserved subnet anycast addresses [RFC2526].

Notes:

The highest 128 values start at ffff:ffff:ffff:ff80, not ffff:ffff:ffff:ff7f.

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