Hi, I'm using perl to convert various attributes into a standardised XX-XX-XX-XX-XX-XX format e.g $RAD_REQUEST{'Calling-Station-Id'} = &formatMac($RAD_REQUEST{'Calling-Station-Id'}); $RAD_REQUEST{'Called-Station-Id'} = &formatMac($RAD_REQUEST{'Called-Station-Id'}); $RAD_REQUEST{'User-Name'} = &formatMac($RAD_REQUEST{'User-Name'}); which works just fine. However, our Comp Science dept decided not to use the same hex formatting as us so when I proxy mac-auth requests off to their server, I need to make sure that I don't do the above. Is there any way I can wrap an if ( Client-Shortname != "cseswitches") { ... } round the above so that I only perform the conversion when processing non Comp Sci requests? Rgds A