RFC 8250, "IPv6 Performance and Diagnostic Metrics (PDM) Destination Option", September 2017

Errata ID: 7601
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Chris Lonvick
Date Reported: 2023-08-12
Held for Document Update by: Martin Duke
Date Held: 2023-08-29

Section 3.2.1 says:

This field is initialized at a random number and incremented
monotonically for each packet of the session flow of the
5-tuple.  The random-number initialization is intended to make
it harder to spoof and insert such packets.

It should say:

This field is initialized at a random number and incremented
sequentially for each packet of the session flow of the
5-tuple.  The random-number initialization is intended to make
it harder to spoof and insert such packets.

Notes:

The term monotonically increasing just means that the value must not decrease; it does not mean that it must increase. For example a monotonically increasing sequence may be: 1,2,2,2,2,2,2,2. On the other hand, a sequentially increasing example would be 1,2,3,4,5,6,7,8. I believe that the authors intended for the value to increase sequentially for each packet.

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