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RFC 4944, "Transmission of IPv6 Packets over IEEE 802.15.4 Networks", September 2007

Source of RFC: 6lowpan (int)

Errata ID: 6194
Status: Reported
Type: Technical
Publication Format(s) : TEXT

Reported By: Tommaso Pecorella
Date Reported: 2020-05-30

Section 6 says:

However, in the
   resultant interface identifier, the "Universal/Local" (U/L) bit SHALL
   be set to zero in keeping with the fact that this is not a globally
   unique value.

It should say:

However, in the
   resultant interface identifier, the "Universal/Local" (U/L) bit SHALL
   be set to one in keeping with the fact that this is not a globally
   unique value.

Notes:

IEEE (see https://standards.ieee.org/content/dam/ieee-standards/standards/web/documents/tutorials/eui.pdf) states that:
"the second least significant bit of Octet 0 (the U/L bit) indicates universal (U/L=0) or local (U/L=1) administration of the address."

Thus, the U/L bit in the "pseudo 48-bit address" shall have its U/L bit set to one, not to zero.

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