Reverted to xml -15 as uploaded to IETF
Changes that were added in -16, re-added to base -15 version.
(essentially a copy of commit 59762b6207ae9259f8961f9e8869f572f551a1c5)
Minor correction (address => addresses)
Generated -17 (with fix in references)

 - generated using xml.resource.org
 - fix: v4configuration-02 => -03