[cups] problem with CUPS network printing and Zebra ZP505 label printer

[Vadim A. Misbakh-Soloviov]

yes, and that's exact the problem I had with many other printers (not only 
barcode ones).
And the exactly the way it was possible to fix them.

And developers answer was just "don't apply ppd's twice".
But, as you mentioned, it is not always possible to do that because of such 
conditions.

And, unfortunatelly, it is still no CUPS-side solution.

Only way is to manually patch PPDs :'(