# Open Transport 2.5.1 and 2.5.2 fails with lease times larger than 1 hour class "Macintosh_a" { if ( ( substring (hardware, 0, 3) = 00:05:02 ) or ( (hardware, 0, 3) = 00:61:61 ) ) { default-lease-time 3599; max-lease-time 3599; min-lease-time 3599; }