The CHANGES entry had misspellings which I was going to quickly fix:
s/exlude/exclude/
s/a exclude/an exclude/
but after looking I was wondering two things:

should the CHANGES entry mention RFC 6147 (section 5.1.4) for this change?

and should notes.xml be updated?  Is this a noticable behavior change? The docs changed:

If not defined, <command>exclude</command>
-               defaults to none.
+               defaults to ::ffff:0.0.0.0/96.

Also should another test be added for returning an address not matching the default exclude?