Merge "Support DHCPv4 rebinding state" into nyc-dev
am: 4bf3157c45

* commit '4bf3157c4560148b9b3f2e6aec7ed0835f6af14a':
  Support DHCPv4 rebinding state

Change-Id: If31de53174e64e154152b7baa60f23a387092e87