<New id="IPAccessHandler"
    class="org.eclipse.jetty.server.handler.IPAccessHandler">
                   <Set name="white">
                     <Array type="String">
                       <Item>127.0.0.1</Item>
                       <Item>-.-.-.-|/solr/techproducts/select</Item>
                     </Array>
                   </Set>
                   <Set name="whiteListByPath">false</Set>
                   <Set name="handler">
                     <New id="Contexts"
    class="org.eclipse.jetty.server.handler.ContextHandlerCollection"/>
                   </Set>
                 </New>

<New class="org.eclipse.jetty.server.handler.IPAccessHandler">
           <Call name="addWhite">
             <Arg>xxx.xxx.xxx.xxx</Arg>
           </Call>
           <Set name="handler">
             <!-- here's where you put what was there before: -->
             <New id="Contexts" class="org.eclipse.jetty.server.handler.ContextHandlerCollection"/>
           </Set>
         </New>