[CentOS] KVM Network (NetworkManager) broken

Hello,

CentOS 7.2

I have a bad big problem with my Server running KVM Client.

I have the most time restarting (reboot) the system a not running network !!!
my interfaces change the name from eth1 to ensX or a Interface is not 
starting?

I mean I have all Situation tested with NetworkManager without NetworkManager 
but the problem exist!!!

I have 4 Interfaces created on install 
	
ens10
ens11
eth0
eth1

this was created on install?

have any a idea what is going wrong with centos

Thanks for a answer,

-- 
mit freundlichen Grüßen / best regards,

  Günther J. Niederwimmer