URL Rewrite

 
 when HTTP_REQUEST_SEND { 
  
     Force evaluation in the clientside context 
    clientside { 
  
        Check the requested pool member 
       switch [IP::server_addr] { 
          1.1.1.1 { 
             HTTP::header replace Host "www.abc.com" 
          } 
          default { 
             HTTP::header replace Host "www.def.com" 
          } 
       } 
    } 
 }