Hello Michael and Karen 

Please consider figures 18 & 19 I proposed below with the tunnels more isolated and the PDAO messages written in full. I believe that’s what we need to solve Michael NS issues with those.

A bientôt;

Pascal

Le 21 mars 2026 à 10:26, Pascal Thubert <[email protected]> a écrit :


Hello Michael

The skew seems to be coming from tabs in my editor.
I reviewed your changes and have no issue with them.

I believe that we need to add a P before or above the DAO the figure 18 like below:

18 would become

        ------+---------
              |          Internet
              |
           +-----+
           |     | Border Router
           |     |  (RPL Root)
           +-----+                      | P-  ^                   |
              |                         | DAO | P-DAO-ACK         |
        o    o   o    o                 |     |                   |
    o o   o  o Ingress  o  o  o         |  ^       | Projected    .
   o  o o  o    o  \\  o  o    o        |  | P-DAO | Route        .
   o   o    o  o    \\  o    o  o  o    | ^        |              .
  o  o   o  o   o    Egress   o o       v | P-DAO  v              .
  o          o   LLN   o   o     o                                |
      o o   o        o     o              Loose Source Route Path |
   o       o      o    o                                          v


figure 19 looked OK to me but maybe like below it is clearer?

           ------+---------
                 |          Internet
                 |
              +-----+
              |     | Border Router
              |     |  (RPL Root)
              +-----+                    | P-  ^ P-DAO-ACK
                 |        Track          | DAO |
           o    o   o    Ingress         V     |   
       o o   o  o   o  o     X   o                X Source-
      o  o o  o o    o   o     X    o  o          X Routed
      o   o    o  o     o   o    X     o          X Segment
     o  o   o  o   o  o    o  o    X              X
Egress o o o o o | Target o o LLN o o o o o
 
all the best;

Pascal
Le sam. 21 mars 2026 à 02:50, Michael Richardson <[email protected]> a écrit :

Michael Richardson <[email protected]> wrote:
    > I found though:

    > Figure 3 seems askew, the ^v route between S and D is hard to read.
    > Figure 4 is better, but might also be better aligned.
    > Figure 7 has skew and some other issues... like this line of ._- under
    > "Southbound API"
    > I checked .html and .txt to be sure it wasn't just the red/green markup.
    > Figure 18... not sure if there is a problem.
    > Figure 19, definitely a problem.

Hi, I edited the XML slightly, and put it here:
https://www.sandelman.ca/tmp/rfc9914-authors-fixed-figures.xml

I think it fixes 3,4,19.
I fixed some things on figure 7.
I don't know if I got 18.

--
Michael Richardson <[email protected]>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide






--
Pascal
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