What should an IP based VirtualHost directive look like?

This example is straight out of the stock SWS httpd.conf file.

            
   # VirtualHost example:
            
   # Almost any Apache directive may go into a VirtualHost container.
           
   #
          
   <VirtualHost ip.address.of.host.some_domain.com/>
            
   ServerAdminwebmaster@host.some_domain.com
           
   DocumentRoot /www/docs/host.some_domain.com
           
   ServerName host.some_domain.com/
          
   ErrorLog logs/host.some_domain.com-error_log
           
   CustomLog logs/host.some_domain.com-access_log common
          
   </VirtualHost>