vm/vmm: enable network
vm/vmm: enable network

Without -L local interface vio0 is not enabled
and we can't connect to the machine.

Update #712

google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller