Irule from 4.6 to 9

class WebURLs {  
 "www.mercadolivre.com"  
 "www.mercadolivre.com.br"  
 } 
  
 when HTTP_REQUEST {  
   if { [HTTP::uri] starts_with "/fd/" } {  
     use pool FD_SERVERS  
   } elseif { [HTTP::host] equals "www.mercadolibre.com.ar" } {  
       use pool NC3100N  
   } elseif { [matchclass [HTTP::host] equals $::WebURLs] } {  
       use pool Netcache_3100  
   }  
   else {  
     use pool Mexico  
   }  
 }