- Secondary servers in a failover pair will now perform ddns removals if

- Secondary servers in a failover pair will now perform ddns removals if
  they had performed ddns updates on a lease that is expiring, or was
  released through the primary.  As part of the same fix, stale binding scopes
  will now be removed if a change in identity of a lease's active client is
  detected, rather than simply if a lease is noticed to have expired (which it
  may have expired without a failover server noticing in some situations).
  [ISC-Bugs #19826b]