Bypass iRule for specific IP

Hi,

I don't understand, on what do you want to 'while' ?

If you mean for each client IP address then you need only an if:

 
 if { not [matchclass [IP::remote_addr] equals $::serversIpClass] } { 
  
   if {([HTTP::status] == 404)} then {  
     HTTP::redirect "url"  
   } elseif { ([HTTP::payload] contains "File Not Found") or ([HTTP::payload] contains "404 NOT FOUND")  } then {  
     HTTP::redirect "url"  
   } 
 } 
 } 
 

or if there is only one exception, something like that:

if { [IP::remote_addr] not equals "10.0.1.1" }