---
fixes:
  - Fixes the issue of port number 0 (zero) being considered invalid (`bug 1729628
    <https://bugs.launchpad.net/ironic/+bug/1729628>`_). Zero is a valid port
    number and is now recognized as such.

Add release note for fix to port 0 being valid
Add release note for fix to port 0 being valid

This adds a release note about the fix for 0 (zero) being a
valid port number.

This is a follow up to d3da9dec0ea5102a3f7b217843d03f2147753b9e

Change-Id: Iaee651f76f61174e34815acc78cda42695716038
Closes-Bug: #1729628
