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RFC 2131, "Dynamic Host Configuration Protocol", March 1997

Note: This RFC has been updated by RFC 3396, RFC 4361, RFC 5494, RFC 6842

Source of RFC: dhc (int)
See Also: RFC 2131 w/ inline errata

Errata ID: 7369
Status: Verified
Type: Editorial
Publication Format(s) : TEXT

Reported By: Panayiotis Gavriil
Date Reported: 2023-02-24
Verifier Name: RFC Editor
Date Verified: 2023-02-24

Section 3.2 says:

  2. Servers with knowledge of the client's configuration parameters
      respond with a DHCPACK message to the client.  Servers SHOULD NOT
      check that the client's network address is already in use; the
      client may respond to ICMP Echo Request messages at this point.

                Server          Client          Server

                  v               v               v
                  |                |               |
                  |              Begins            |
                  |          initialization        |
                  |                |               |
                  |                /|\             |
                  |   _________ __/ | \__________  |
                  | /DHCPREQU EST  |  DHCPREQUEST\ |
                  |/               |              \|
                  |                |               |
               Locates             |            Locates
            configuration          |         configuration
                  |                |               |
                  |\               |              /|
                  | \              |  ___________/ |
                  |  \             | /  DHCPACK    |
                  |   \ _______    |/              |
                  |     DHCPACK\   |               |
                  |          Initialization        |
                  |             complete           |
                  |               \|               |
                  |                |               |
                  |           (Subsequent          |
                  |             DHCPACKS           |
                  |             ignored)           |
                  |                |               |
                  |                |               |
                  v                v               v

     Figure 4: Timeline diagram of messages exchanged between DHCP
               client and servers when reusing a previously allocated
               network address

It should say:

  2. Servers with knowledge of the client's configuration parameters
      respond with a DHCPACK message to the client.  Servers SHOULD NOT
      check that the client's network address is already in use; the
      client may respond to ICMP Echo Request messages at this point.

                Server          Client          Server

                  v               v               v
                  |               |               |
                  |             Begins            |
                  |         initialization        |
                  |               |               |
                  |              /|\              |
                  |   __________/ | \__________   |
                  | /DHCPREQUEST  |  DHCPREQUEST\ |
                  |/              |              \|
                  |               |               |
               Locates            |            Locates
            configuration         |         configuration
                  |               |               |
                  |\              |              /|
                  | \___________  |  ___________/ |
                  |    DHCPACK  \ | /  DHCPACK    |
                  |              \|/              |
                  |               |               |
                  |         Initialization        |
                  |            complete           |
                  |               |               |
                  |               |               |
                  |          (Subsequent          |
                  |            DHCPACKS           |
                  |            ignored)           |
                  |               |               |
                  |               |               |
                  v               v               v

     Figure 4: Timeline diagram of messages exchanged between DHCP
               client and servers when reusing a previously allocated
               network address

Notes:

Alignment in various places + removing space in the middle of a word ("DHCPREQU EST" -> "DHCPREQUEST")

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