support Max e1000 Nics number and disable multifunction.

support Max e1000 Nics number and disable multifunction.

/usr/libexec/qemu-kvm -M pc -enable-kvm -m 4G -smp 2,sockets=2,cores=1,threads=1 -name rhel7 -uuid 745fe449-aac8-29f1-0c2d-5042a707263b -drive file=/home/windows_server_2012_r2_x64.raw,if=none,id=drive-ide0-0-0,format=raw,cache=none -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -netdev tap,id=hostnet1,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet1,mac=00:12:17:18:49:01,bus=pci.0,id=e10001 -netdev tap,id=hostnet2,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet2,mac=00:12:17:18:49:02,bus=pci.0,id=e10002 -netdev tap,id=hostnet3,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet3,mac=00:12:17:18:49:03,bus=pci.0,id=e10003 -netdev tap,id=hostnet4,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet4,mac=00:12:17:18:49:04,bus=pci.0,id=e10004 -netdev tap,id=hostnet5,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet5,mac=00:12:17:18:49:05,bus=pci.0,id=e10005 -netdev tap,id=hostnet6,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet6,mac=00:12:17:18:49:06,bus=pci.0,id=e10006 -netdev tap,id=hostnet7,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet7,mac=00:12:17:18:49:07,bus=pci.0,id=e10007 -netdev tap,id=hostnet8,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet8,mac=00:12:17:18:49:08,bus=pci.0,id=e10008 -netdev tap,id=hostnet9,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet9,mac=00:12:17:18:49:09,bus=pci.0,id=e10009 -netdev tap,id=hostnet10,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet10,mac=00:12:17:18:49:10,bus=pci.0,id=e100010 -netdev tap,id=hostnet11,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet11,mac=00:12:17:18:49:11,bus=pci.0,id=e100011 -netdev tap,id=hostnet12,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet12,mac=00:12:17:18:49:12,bus=pci.0,id=e100012 -netdev tap,id=hostnet13,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet13,mac=00:12:17:18:49:13,bus=pci.0,id=e100013 -netdev tap,id=hostnet14,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet14,mac=00:12:17:18:49:14,bus=pci.0,id=e100014 -netdev tap,id=hostnet15,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet15,mac=00:12:17:18:49:15,bus=pci.0,id=e100015 -netdev tap,id=hostnet16,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet16,mac=00:12:17:18:49:16,bus=pci.0,id=e100016 -netdev tap,id=hostnet17,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet17,mac=00:12:17:18:49:17,bus=pci.0,id=e100017 -netdev tap,id=hostnet18,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet18,mac=00:12:17:18:49:18,bus=pci.0,id=e100018 -netdev tap,id=hostnet19,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet19,mac=00:12:17:18:49:19,bus=pci.0,id=e100019 -netdev tap,id=hostnet20,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet20,mac=00:12:17:18:49:20,bus=pci.0,id=e100020 -netdev tap,id=hostnet21,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet21,mac=00:12:17:18:49:21,bus=pci.0,id=e100021 -netdev tap,id=hostnet22,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet22,mac=00:12:17:18:49:22,bus=pci.0,id=e100022 -netdev tap,id=hostnet23,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet23,mac=00:12:17:18:49:23,bus=pci.0,id=e100023 -netdev tap,id=hostnet24,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet24,mac=00:12:17:18:49:24,bus=pci.0,id=e100024 -netdev tap,id=hostnet25,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet25,mac=00:12:17:18:49:25,bus=pci.0,id=e100025 -netdev tap,id=hostnet26,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet26,mac=00:12:17:18:49:26,bus=pci.0,id=e100026 -netdev tap,id=hostnet27,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet27,mac=00:12:17:18:49:27,bus=pci.0,id=e100027 -netdev tap,id=hostnet28,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet28,mac=00:12:17:18:49:28,bus=pci.0,id=e100028 -netdev tap,id=hostnet29,vhost=on,script=/etc/qemu-ifup -device e1000,netdev=hostnet29,mac=00:12:17:18:49:29,bus=pci.0,id=e100029 -monitor stdio -vnc :1