NetworkManager provides a sophisticated and intuitive user interface which enables users easily to switch their network environment. However, NetworkManager is not a suitable solution in the following cases:
Your computer provides network services for other computers in your network, for example, it is a DHCP or DNS server.
Your computer is a Xen server or your system is a virtual system inside Xen.
You want to use SCPM for network configuration management. To use SCPM and NetworkManager at the same time, disable the network resource in SCPM configuration.