Got it: On /interfaces_opt.php it was possible to enter 26 hex digits
without the leading "0x" prefix :-(

BR, PIT


---------------------------------------------------------------------------
 copyleft(c) by |           The state of some commercial Un*x is more
 Peter Allgeyer |   _-_     unsecure than any Linux box without a root
                | 0(o_o)0   password...   -- Bernd Eckenfels
---------------oOO--(_)--OOo-----------------------------------------------