RFC Errata


Errata Search

 
Source of RFC  
Summary Table Full Records

RFC 4861, "Neighbor Discovery for IP version 6 (IPv6)", September 2007

Source of RFC: ipv6 (int)

Errata ID: 3367
Status: Rejected
Type: Technical
Publication Format(s) : TEXT

Reported By: Ron Bonica
Date Reported: 2012-09-27
Rejected by: Brian Haberman
Date Rejected: 2013-05-31

Section 4.2 says:

   Routers send out Router Advertisement messages periodically, or in
   response to Router Solicitations.

      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      |     Code      |          Checksum             |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     | Cur Hop Limit |M|O|  Reserved |       Router Lifetime         |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                         Reachable Time                        |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                          Retrans Timer                        |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |   Options ...
     +-+-+-+-+-+-+-+-+-+-+-+-

   IP Fields:

      Source Address
                     MUST be the link-local address assigned to the
                     interface from which this message is sent.

      Destination Address
                     Typically the Source Address of an invoking Router
                     Solicitation or the all-nodes multicast address.

      Hop Limit      255

   ICMP Fields:

      Type           134

      Code           0

      Checksum       The ICMP checksum.  See [ICMPv6].

      Cur Hop Limit  8-bit unsigned integer.  The default value that
                     should be placed in the Hop Count field of the IP
                     header for outgoing IP packets.  A value of zero
                     means unspecified (by this router).

      M              1-bit "Managed address configuration" flag.  When
                     set, it indicates that addresses are available via
                     Dynamic Host Configuration Protocol [DHCPv6].

                     If the M flag is set, the O flag is redundant and
                     can be ignored because DHCPv6 will return all
                     available configuration information.

      O              1-bit "Other configuration" flag.  When set, it
                     indicates that other configuration information is
                     available via DHCPv6.  Examples of such information
                     are DNS-related information or information on other
                     servers within the network.

        Note: If neither M nor O flags are set, this indicates that no
        information is available via DHCPv6.

It should say:

   Routers send out Router Advertisement messages periodically, or in
   response to Router Solicitations.

    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      |     Code      |          Checksum             |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      | Cur Hop Limit |M|O|H|Prf|Resvd|       Router Lifetime         |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                         Reachable Time                        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                          Retrans Timer                        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |   Options ...
      +-+-+-+-+-+-+-+-+-+-+-+-


   IP Fields:

      Source Address
                     MUST be the link-local address assigned to the
                     interface from which this message is sent.

      Destination Address
                     Typically the Source Address of an invoking Router
                     Solicitation or the all-nodes multicast address.

      Hop Limit      255

   ICMP Fields:

      Type           134

      Code           0

      Checksum       The ICMP checksum.  See [ICMPv6].

      Cur Hop Limit  8-bit unsigned integer.  The default value that
                     should be placed in the Hop Count field of the IP
                     header for outgoing IP packets.  A value of zero
                     means unspecified (by this router).

      M              1-bit "Managed address configuration" flag.  When
                     set, it indicates that addresses are available via
                     Dynamic Host Configuration Protocol [DHCPv6].

                     If the M flag is set, the O flag is redundant and
                     can be ignored because DHCPv6 will return all
                     available configuration information.

      O              1-bit "Other configuration" flag.  When set, it
                     indicates that other configuration information is
                     available via DHCPv6.  Examples of such information
                     are DNS-related information or information on other
                     servers within the network.

      H

                     The Home Agent (H) bit is set in a Router Advertisement  
                     to indicate that the router sending this Router 
                     Advertisement is also functioning as a Mobile IPv6 
                     home agent on this link. [RFC3775]

        Prf 
                     2-bit default router preference, encoded as follows:

                       01      High
                       00      Medium (default)
                       11      Low
                       10      Reserved - MUST NOT be sent

                     Indicates whether to prefer this router over other 
                    default routers.  If the Router Lifetime is zero, the
                    preference value MUST be set to (00) by the
                    sender and MUST be ignored by the receiver.  If the
                    Reserved (10) value is received, the receiver MUST 
                    treat the value as if it were (00). [RFC4191]


        Note: If neither M nor O flags are set, this indicates that no
        information is available via DHCPv6.


 

Notes:

Contents of RFC 3775 and 4191 were not brought forward into RFC 4861
--VERIFIER NOTES--
OBE

Report New Errata