import org.projectfloodlight.openflow.protocol.oxm.OFOxmIpProto; //导入依赖的package包/类
private OFMatchV3 buildOFMatchV3() {
	OFFactory of13Factory = OFFactories.getFactory(OFVersion.OF_13);
	OFOxms oxms = of13Factory.oxms();
	
	OFOxmEthType ofOxmEthType = oxms.buildEthType().setValue(EthType.IPv4).build();
	OFOxmIpv4Src ofOxmIpv4Src = oxms.buildIpv4Src().setValue(IPv4Address.of(multicastGroup.sourceIP)).build();
	OFOxmIpProto ofOxmIpProto = oxms.buildIpProto().setValue(IpProtocol.UDP).build();
	OFOxmIpv4Dst ofOxmIpv4Dst = oxms.buildIpv4Dst().setValue(IPv4Address.of(multicastGroup.groupIP)).build();
	OFOxmList oxmList = OFOxmList.of(ofOxmEthType, ofOxmIpv4Src, ofOxmIpv4Dst, ofOxmIpProto);
	OFMatchV3 of13Match = of13Factory.buildMatchV3().setOxmList(oxmList).build();
	return of13Match;		
}