Telepített nyomtató, tesztoldal megy, lpstat megy, lpr szerint unknown printer

Midoriból a localhost:631 alatt futó CUPS felületen simán ki tudtam nyomtatni a tesztoldalt. De mégis ez van:

root@orangepipcplus:~# lpstat -t
scheduler is running
no system default destination
device for CUSTOM_Engineering_TG2460-H: usb://CUSTOM%20Engineering/TG2460-H?serial=TG2460-H%20Num.:%200
CUSTOM_Engineering_TG2460-H accepting requests since Sun 12 Nov 2017 08:38:02 PM UTC
printer CUSTOM_Engineering_TG2460-H is idle. enabled since Sun 12 Nov 2017 08:38:02 PM UTC
root@orangepipcplus:~# lpr test.pdf -P CUSTOM_Engineering_TG2460-H
lpr: CUSTOM_Engineering_TG2460-H: unknown printerAz error logban a sikertelen lpr parancs után semmi új bejegyzés nincsen. Ami benne van, szerintem az is irreleváns:

W [01/Jan/1970:00:00:06 +0000] CreateProfile failed: org.freedesktop.DBus.Error.ServiceUnknown:The name org.freedesktop.ColorManager was not provided by any .service files
W [01/Jan/1970:00:00:06 +0000] CreateDevice failed: org.freedesktop.DBus.Error.ServiceUnknown:The name org.freedesktop.ColorManager was not provided by any .service files
E [01/Jan/1970:00:00:06 +0000] Unable to open listen socket for address [v1.::1]:631 - Cannot assign requested address.

Van ötlete valakinek?