[dmarc-ietf] Tree walk nits

[John R Levine <[e-mail]>]

I've been staring at the tree walk description and see a few places where 
it could be clearer, and one place where I think it's wrong, left over 
text from the old downward walk.

If this discussion isn't clear enough I can do a pull request with the 
proposed changes.

In the description of the tree walk in sec 4.6, it appears that you always 
walk up to the root even if you've already found the record you're going 
to use. In steps 2 and 7 I would add "If one valid record remains, stop 
and use that record."

The part with the numbered list in sec 4.8 is confusing.  Step 3 says 
"select the record for the domain with the fewest number of labels" which 
I think is wrong, should be the most labels.  I would rewrite the whole 
section to say to use the record found by the tree walk, and the three 
numbered items say how to interpret it.

Regards,
John Levine, [e-mail], Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly