RFC 4857, "Mobile IPv4 Regional Registration", June 2007

Errata ID: 2103
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Pete McCann
Date Reported: 2010-04-01
Verifier Name: Brian Haberman
Date Verified: 2012-10-04

Section 8.1 says:

8.1.  Regional Registration Flag

   The only change to the Mobility Agent Advertisement Extension defined
   in [RFC3344] is a flag indicating that the domain, to which the FA
   generating the Agent Advertisement belongs, supports regional
   registrations.  The flag is inserted after the flags defined in
   [RFC3344], [RFC3024], and [RFC3519].

   Regional Registration flag:

        0                   1                   2                   3
        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |     Type      |    Length     |        Sequence Number        |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |           Lifetime            |R|B|H|F|M|G|r|T|U|I| reserved  |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                  zero or more Care-of Addresses               |
       |                              ...                              |

   The flag is defined as follows:

            Type    16 (Mobility Agent Advertisement)

            I       Regional Registration.  This domain supports
                    regional registration as specified in this document.

It should say:

8.1.  Regional Registration Flag

   The only change to the Mobility Agent Advertisement Extension defined
   in [RFC3344] is a flag indicating that the domain, to which the FA
   generating the Agent Advertisement belongs, supports regional
   registrations.  The flag is inserted after the flags defined in
   [RFC3344], [RFC3024], [RFC3519], and [RFC3543].

   Regional Registration flag:

        0                   1                   2                   3
        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |     Type      |    Length     |        Sequence Number        |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |           Lifetime            |R|B|H|F|M|G|r|T|U|X|I|reserved |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                  zero or more Care-of Addresses               |
       |                              ...                              |

   The flag is defined as follows:

            Type    16 (Mobility Agent Advertisement)

            I       Regional Registration.  This domain supports
                    regional registration as specified in this document.

Notes:

Bit 10 was already allocated by RFC 3543. We need to move the 'I' bit one position to the right, and also add a reference to RFC 3543 in the References section.

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