dns欺骗IP添加无策略组选择

src/main/webapp/WEB-INF/views/cfg/dnsIpCfgForm.jsp

@@ -76,7 +76,7 @@ $(function(){
 								            <label class="control-label col-md-3"><spring:message code="group_name"/></label>
 								            <div class="col-md-6">
 								            	<select name="dnsStrategyId" class="selectpicker show-tick form-control required">
-								            		<option value="" ><spring:message code="select"/></option>
+								            		<option value="0" ><spring:message code="select"/></option>
 					               					<c:forEach items="${policyGroups }" var="policyGroup">
 														<option value="${policyGroup.groupId}" <c:if test="${_cfg.dnsStrategyId==policyGroup.groupId }">selected</c:if>><spring:message code="${policyGroup.groupName}"/></option>
 							              			</c:forEach>