P910nd has never worked for me in 18.06

Is it possible to hazard a guess why?

I've had plenty of successful experience with the process, as recently as 16.x, but 18.06.2 (and .1 before it) simply do not work for me. Nothing happens.

I do have it installed. The router has been power cycled. The printer driver on W10 is correct (TCP/IP,, port 9100) and is the very one that I'd used successfully before.

I'm at a loss.

The default file has always worked before:

config p910nd
	option device '/dev/usb/lp0'
	option port '0'
	option bind ''
	option enabled '1'
	option bidirectional '1'