I've been having this issue for 2 weeks now with my VMware Player-hosted Ubuntu 12.04. I only use it for my LAMP stack. I've had no issues with it before until about 2 weeks ago when it almost always (once per day at least) loses its network configuration.
rhel-7/centos-7 network configuration is bizarre -- largely because they are straddling between the old (shell scripts usually invoked by /etc/init.d/network which mutate configuration state of network devices) and new way (NetworkManager daemon which manages network device settings).
To the best of my understanding -- rhel7/centos-7 are simultaneously supporting both configuration modes for netw