NetworkManager bug fix and enhancement update

NetworkManager is a system network service that manages network devices and
connections, attempting to keep active network connectivity when available.
Its capabilities include managing Ethernet, wireless, mobile broadband
(WWAN), and PPPoE devices, as well as providing VPN integration with a
variety of different VPN services.

Bug Fix(es) and Enhancement(s):

• Incorrect set hostname to localhost using DNS reverse lookup of ipv6
  address (BZ#1970398)