import org.apache.commons.lang3.tuple.Pair;
import org.opendaylight.controller.sal.utils.IPProtocols;
import org.opendaylight.controller.sal.utils.NetUtils;
import org.apache.commons.lang3.tuple.Pair;
import org.opendaylight.controller.sal.utils.IPProtocols;
import org.opendaylight.controller.sal.utils.NetUtils;
private static final String VERSION = "Version";
private static final String HEADERLENGTH = "HeaderLength";
private static final String DIFFSERV = "DiffServ";
private static final String VERSION = "Version";
private static final String HEADERLENGTH = "HeaderLength";
private static final String DIFFSERV = "DiffServ";