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RFC 4302, "IP Authentication Header", December 2005

Errata ID:1644
Status: Held for Document Update
Type: Editorial
Publication Format(s) : TEXT
Reported By: Nikolai Malykh
Date Reported: 2008-12-25
Held for Document Update by: Pasi Eronen

Section B2 says:

Appendix B2 says:     + Case A: Tl >= (W - 1). In this case, the window is within one                              sequence number subspace.  (See Figure 1)     + Case B: Tl < (W - 1).  In this case, the window spans two                              sequence number subspaces.  (See Figure 2)   In the figures below, the bottom line ("----") shows two consecutive   sequence number subspaces, with zeros indicating the beginning of   each subspace.  The two shorter lines above it show the higher-order   bits that apply.  The "====" represents the window.  The "****"   represents future sequence numbers, i.e., those beyond the current   highest sequence number authenticated (ThTl).        Th+1                         *********        Th               =======*****              --0--------+-----+-----0--------+-----------0--                         Bl    Tl            Bl                                        (Bl+2^32) mod 2^32                            Figure 1 -- Case A        Th                           ====**************        Th-1                      ===              --0-----------------+--0--+--------------+--0--                                  Bl    Tl            Bl                                                 (Bl+2^32) mod 2^32                            Figure 2 -- Case B

It should say:

Must say:     + Case A: Tl >= (W - 1). In this case, the window is within one                              sequence number subspace.  (See Figure 2)     + Case B: Tl < (W - 1).  In this case, the window spans two                              sequence number subspaces.  (See Figure 3)   In the figures below, the bottom line ("----") shows two consecutive   sequence number subspaces, with zeros indicating the beginning of   each subspace.  The two shorter lines above it show the higher-order   bits that apply.  The "====" represents the window.  The "****"   represents future sequence numbers, i.e., those beyond the current   highest sequence number authenticated (ThTl).        Th+1                         *********        Th               =======*****              --0--------+-----+-----0--------+-----------0--                         Bl    Tl            Bl                                        (Bl+2^32) mod 2^32                            Figure 2 -- Case A        Th                           ====**************        Th-1                      ===              --0-----------------+--0--+--------------+--0--                                  Bl    Tl            Bl                                                 (Bl+2^32) mod 2^32                            Figure 3 -- Case B

Notes:

Wrong numbers for figures in Section B2.

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