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RFC 4578, "Dynamic Host Configuration Protocol (DHCP) Options for the Intel Preboot eXecution Environment (PXE)", November 2006

Source of RFC: dhc (int)
See Also: RFC 4578 w/ inline errata

Errata ID: 4624
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: David Anderson
Date Reported: 2016-02-23
Verifier Name: Brian Haberman
Date Verified: 2016-03-23

Section 2.1 says: 

            Type   Architecture Name
            ----   -----------------
              0    Intel x86PC
              1    NEC/PC98
              2    EFI Itanium
              3    DEC Alpha
              4    Arc x86
              5    Intel Lean Client
              6    EFI IA32
              7    EFI BC
              8    EFI Xscale
              9    EFI x86-64

It should say:

            Type   Architecture Name
            ----   -----------------
              0    Intel x86PC
              1    NEC/PC98
              2    EFI Itanium
              3    DEC Alpha
              4    Arc x86
              5    Intel Lean Client
              6    EFI IA32
              7    EFI x86-64
              8    EFI Xscale
              9    EFI BC

Notes:

The values for EFI BC and EFI x86-64 should be swapped. UEFI imeplementations use value 7 to report EFI x86-64, not value 9. The IANA registry for DHCPv6 options (http://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml#processor-architecture) correctly reflects reality, with values 7 and 9 swapped compared to RFC 4578.

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