// check the overlapping match from the first prefix information
		for routeIndex, routePrefix := range matchHTTPRoutes {
			for rIndex := routeIndex + 1; rIndex < len(matchHTTPRoutes); rIndex++ {
				// exclude the duplicate-match cases which have been validated above
				if strings.Compare(matchHTTPRoutes[rIndex].Prefix, routePrefix.Prefix) == 0 {
					continue
				}
				// Validate former prefix match does not cover the latter one.