--- 1/draft-ietf-ipv6-ra-flags-option-00.txt	2007-06-22 22:12:11.000000000 +0200
+++ 2/draft-ietf-ipv6-ra-flags-option-01.txt	2007-06-22 22:12:11.000000000 +0200
@@ -1,17 +1,19 @@
 
 Network Working Group                                   B. Haberman, Ed.
 Internet-Draft                                                   JHU APL
 Intended status: Standards Track                               R. Hinden
-Expires: October 3, 2007                                           Nokia
+Expires: December 23, 2007                                         Nokia
+                                                           June 21, 2007
+
                  IPv6 Router Advertisement Flags Option
-                   draft-ietf-ipv6-ra-flags-option-00
+                   draft-ietf-ipv6-ra-flags-option-01
 
 Status of this Memo
 
    By submitting this Internet-Draft, each author represents that any
    applicable patent or other IPR claims of which he or she is aware
    have been or will be disclosed, and any of which he or she becomes
    aware will be disclosed, in accordance with Section 6 of BCP 79.
 
    Internet-Drafts are working documents of the Internet Engineering
    Task Force (IETF), its areas, and its working groups.  Note that
@@ -22,21 +24,21 @@
    and may be updated, replaced, or obsoleted by other documents at any
    time.  It is inappropriate to use Internet-Drafts as reference
    material or to cite them other than as "work in progress."
 
    The list of current Internet-Drafts can be accessed at
    http://www.ietf.org/ietf/1id-abstracts.txt.
 
    The list of Internet-Draft Shadow Directories can be accessed at
    http://www.ietf.org/shadow.html.
 
-   This Internet-Draft will expire on October 3, 2007.
+   This Internet-Draft will expire on December 23, 2007.
 
 Copyright Notice
 
    Copyright (C) The IETF Trust (2007).
 
 Abstract
 
    The IPv6 Neighbor Discovery's Router Advertisement message contains
    an 8-bit field reserved for single-bit flags.  Several protocols have
    reserved flags in this field and others are preparing to reserve a
@@ -44,26 +46,26 @@
    defines an option to the Router Advertisement message that expands
    the available number of flag bits available.
 
 Table of Contents
 
    1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
    2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 3
    3.  Current Router Advertisement Flags  . . . . . . . . . . . . . . 3
    4.  Flags Expansion Option  . . . . . . . . . . . . . . . . . . . . 4
    5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
-   6.  Security Considerations . . . . . . . . . . . . . . . . . . . . 5
+   6.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
    7.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
      7.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
      7.2.  Informative References  . . . . . . . . . . . . . . . . . . 6
    Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 6
-   Intellectual Property and Copyright Statements  . . . . . . . . . . 7
+   Intellectual Property and Copyright Statements  . . . . . . . . . . 8
 
 1.  Introduction
 
    The IPv6 Neighbor Discovery Protocol's [1] Router Advertisement
    message contains an 8-bit field reserved for single-bit flags.
    Several protocols have reserved flags in this field and others are
    preparing to reserve a sufficient number of flags to exhaust the
    field.
 
    This document defines an option for the Router Advertisement message
@@ -140,23 +142,25 @@
       Advertisement message header
 
    o  MUST only occur once in the Router Advertisement message.
 
    Upon reception, a receiver processing NDP messages containing this
    option:
 
    o  MUST ignore the option if it occurs in a message other than a
       Router Advertisement
 
+   o  MUST ignore the option if it is not the first option in the Router
+      Advertisement
+
    o  MUST ignore all instances of the option except the first one
       encountered in the Router Advertisement message
-
    The bit fields within the option are numbered from left to right from
    8 to 55 and follow the numbering of the flag bits in the RA option
    described in Figure 1.  Flag bits 0 to 7 are found in the Router
    Advertisement message header defined in [1]
 
 5.  IANA Considerations
 
    The IANA is requested to define a new IPv6 Neighbor Discovery option
    for the option defined in this document of the form: