Geolocation irule with HTTP response

You can try something like this

when HTTP_REQUEST {

set default_pool [LB::server pool] switch [whereis [IP::client_addr] country]{

DE {

log local0. "Geo Client ([IP::client_addr]) detected as Germany" 
HTTP::respond 500 content {
  
     
        Apology Page
     
     
        We are sorry, but you are not allowed access to this site from you geographic location
     
  
}
} 
    default { pool $default_pool   }

}

}