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RFC 6550, "RPL: IPv6 Routing Protocol for Low-Power and Lossy Networks", March 2012

Source of RFC: roll (rtg)
See Also: RFC 6550 w/ inline errata

Errata ID: 6554
Status: Verified
Type: Editorial
Publication Format(s) : TEXT

Reported By: Nikolai Malykh
Date Reported: 2021-04-22
Verifier Name: Alvaro Retana
Date Verified: 2021-04-22

Section 9.9 says:

   2.  The node MUST logically construct groupings of its DAO parents
       while populating the Path Control field, where each group
       consists of DAO parents of equal preference.  Those groups MUST
       then be ordered according to preference, which allows for a
       logical mapping of DAO parents onto Path Control subfields (see
       Figure 27).  Groups MAY be repeated in order to extend over the
       entire bit width of the patch control field, but the order,
       including repeated groups, MUST be retained so that preference is
       properly communicated.

It should say:

   2.  The node MUST logically construct groupings of its DAO parents
       while populating the Path Control field, where each group
       consists of DAO parents of equal preference.  Those groups MUST
       then be ordered according to preference, which allows for a
       logical mapping of DAO parents onto Path Control subfields (see
       Figure 27).  Groups MAY be repeated in order to extend over the
       entire bit width of the path control field, but the order,
       including repeated groups, MUST be retained so that preference is
       properly communicated.

Notes:

Typo - patch instead of path

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