In the virtual machine system is Linux, use the KVM virtualization, the cloned virtual machine have four pieces of card, second network card which private2 has been inactive, only can start the virtual machine, select private1 but private1 network CARDS are already using a network segment, now just want to know how to make the private2 this card can use
Note: the same virtual machine on another computer private2 is not prompt "inactive", is this not line, I which can help have a look at the great god, thank you,

As shown in figure: