You say you want a syntax checker, but in your description it looks like you want to check for particular values.

Your syntax looks like it's Lisp or Scheme. You may want to search for a suitable module on CPAN. Or perhaps you can tokenize your configuration, and turn it into XML, and then use an XML parser. In XML, your configuration could look like:

<event arg1 = "LinkUp ">
   <match arg1 = "">
       <property_1 arg1 = "">
           <option_1 arg1 = "192.168.0.1"></option_1>
       </property_1>
       <property_2 arg1 = "">
           <option_2 arg1 = "6"></option_2>
       </property_2>
       <property_3 arg1 = "">
           <option_3 arg1 = ""></option_3>
           <value arg1 = "1234"></value>
       </property_3>
    </match>
</event>
[download]

(XML is just very verbose LISP)