Package: cups Version: 2.2.1-8 Severity: wishlist -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
When setting up a printer, I noticed that it showed up twice on the 'Find New Printers' page. It turns out that one of these entires is from the dnssd backend, and the other is from the snmp backend. While both options initially resulted in a working printer, the URL from the snmp backend makes use of the printer's current IP address: <socket://192.168.0.20>. This is problematic on an unmanaged network where IP addresses are not stable. For instance, I just replaced my home network router with a new one, resulting in all the addresses on my network being renumbered. In addition, I noticed that the default setting for DHCP lease time on my new router is only one hour, so it is possible that the printer would get a new address simply by turning the printer off, adding a new device to the network and then turning the printer on again, a process of events that many users are likely to experience. If the snmp backend was disabled by default, users would not run into this problem. It is unclear to me whether this backend is very useful in the modern world of printers that can be discovered by the dnssd backend. The experts who assign their printers a static address can always enable the snmp backend themselves (though I don't know why they would need it to discover the address of the printer that they just manually assigned). - -- System Information: Debian Release: 9.0 APT prefers testing-debug APT policy: (550, 'testing-debug'), (550, 'testing'), (520, 'unstable-debug'), (520, 'unstable'), (510, 'experimental-debug'), (510, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: arm64 Kernel: Linux 4.9.0-1-amd64 (SMP w/2 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages cups depends on: ii cups-client 2.2.1-8 ii cups-common 2.2.1-8 ii cups-core-drivers 2.2.1-8 ii cups-daemon 2.2.1-8 ii cups-filters 1.11.6-3 ii cups-ppdc 2.2.1-8 ii cups-server-common 2.2.1-8 ii debconf [debconf-2.0] 1.5.60 ii ghostscript 9.20~dfsg-2 ii libavahi-client3 0.6.32-2 ii libavahi-common3 0.6.32-2 ii libc-bin 2.24-9 ii libc6 2.24-9 ii libcups2 2.2.1-8 ii libcupscgi1 2.2.1-8 ii libcupsimage2 2.2.1-8 ii libcupsmime1 2.2.1-8 ii libcupsppdc1 2.2.1-8 ii libgcc1 1:6.3.0-6 ii libstdc++6 6.3.0-6 ii libusb-1.0-0 2:1.0.21-1 ii poppler-utils 0.48.0-2 ii procps 2:3.3.12-3 Versions of packages cups recommends: ii avahi-daemon 0.6.32-2 ii colord 1.3.3-2 ii cups-filters [ghostscript-cups] 1.11.6-3 pn printer-driver-gutenprint <none> Versions of packages cups suggests: pn cups-bsd <none> pn cups-pdf <none> pn foomatic-db-compressed-ppds | foomatic-db <none> pn hplip <none> pn printer-driver-hpcups <none> ii smbclient 2:4.5.4+dfsg-1 ii udev 232-18 - -- debconf information: * cupsys/backend: lpd, socket, usb, dnssd * cupsys/raw-print: false -----BEGIN PGP SIGNATURE----- iQJGBAEBCAAwFiEEyqqqGsppqDqJKxhV0gtCAlzaJ7kFAli+gUESHHNhbUByb2Jv dHMub3JnLnVrAAoJENILQgJc2ie5Pl8QAJzCWE7VzKhz3Xhj8Kcqu6RpceO8cevQ hVFnh9UqrS+WahuXtP29lkWR+zY4ZBi5trDJFn4vNB/+eeDjSCG/q1Y0B/BhYSzb gei9nhwFgQjI8XWBlqSmdcn8e11B60MUYM/FPKkAiYcyTSQG+qfWVAH+gL54gHHC 7zn9jpsEI8wy/5SntVV9toIdVtNOy7jdemCbLjfMSb7jkhloyxWeIayvgWu7B4s5 fPQESgVlJ8VdsDMBOfKOAJbOLwCWoqb/occW8nDIjjrcmV7YykBFsPZ+NNWmqxwU 1eWNYk9Pe5uFurtU2yag0HVi22XHmIJ9cUD9KJh6jQoBmNKPjnu/6qFPOQy1ctPs KIKOmiMNdTk1QerbD1SlUMcfA/TGxAW2c3FjWBu4nCQJ7CEu2Qxdv3a9t332+2Nj IiL9kpm7wnv+ncRhbjFgLeEDbhCVFSq5MS5EoBVKiNHRdLfoq4lkuul/Rf2NrV84 H5oW/fcR+f0eIELd/u3pPISJjjzT9b9X97/0vq4owIDtB9XHpo7V4X1zMNjYZQPp cQuHCDpUIb+tHzo29zr1fLyKL7GttwcOICr5i3z1fcLrs9NytWANbSdDRIXfQ62k 05IH0Lw6VjspxcFsCfmcDXoNdvX9J8LgDAZgotVDyQQQhHuvxrzYorj4xwXeBgU4 +E6j1PZr/IdF =k2Ow -----END PGP SIGNATURE-----
