Hi David! Here is my output from the same command. I have nothing in my pixma.conf file.
SANE_DEBUG_BJNP=5 scanimage -L 2>&1 [sanei_debug] Setting debug level of bjnp to 5. [bjnp] sanei_bjnp_find_devices, pixma backend version: 0.23.4 [bjnp] sanei_bjnp_find_devices: No devices specified in configuration file. [bjnp] sanei_bjnp_find_devices: Added all configured scanners, now do auto detection... [bjnp] prepare_socket: lo is not a valid IPv4 interface, skipping... [bjnp] prepare_socket: eth0 is IPv4 capable, sending broadcast, socket = 39 [bjnp] prepare_socket: lo is not a valid IPv6 interface, skipping... [bjnp] prepare_socket: eth0 is IPv6 capable, sending broadcast, socket = 40 [bjnp] sanei_bjnp_find_devices: Select returned, time left 0.499992.... [bjnp] sanei_find_devices: Discover response: [bjnp] 00000000:4d 46 4e 50 82 01 00 00 00 00 00 00 00 00 00 10 [bjnp] 00000010:00 01 80 00 06 04 f4 a9 97 c9 3d 62 c0 a8 01 6f [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or service not known [bjnp] bjnp_allocate_device(mfnp://192.168.1.111:8610/timeout=10000) 0 [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or service not known [bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.1.111 port 8610 [bjnp] bjnp_get_scanner_mac_address: Discover response: [bjnp] 00000000:4d 46 4e 50 82 01 00 00 00 00 00 00 00 00 00 10 [bjnp] 00000010:00 01 80 00 06 04 f4 a9 97 c9 3d 62 c0 a8 01 6f [bjnp] bjnp_allocate_device: Scanner not yet in our list, added it: 192.168.1.111:8610 [bjnp] get_scanner_id: Get scanner identity [bjnp] 00000000:4d 46 4e 50 02 30 00 00 00 01 00 00 00 00 00 00 [bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.1.111 port 8610 [bjnp] get_scanner_id: scanner identity: [bjnp] 00000000:4d 46 4e 50 82 30 00 00 00 01 00 00 00 00 00 5a [bjnp] 00000010:4d 46 47 3a 43 41 4e 4f 4e 3b 43 4d 44 3a 4d 46 [bjnp] 00000020:4e 50 31 2c 4d 75 6c 74 69 50 41 53 53 20 32 2e [bjnp] 00000030:31 3b 4d 44 4c 3a 4d 46 36 34 32 43 2f 36 34 33 [bjnp] 00000040:43 2f 36 34 34 43 3b 43 4c 53 3a 49 4d 47 3b 44 [bjnp] 00000050:45 53 3a 43 61 6e 6f 6e 20 4d 46 36 34 32 43 2f [bjnp] 00000060:36 34 33 43 2f 36 34 34 43 3b [bjnp] get_scanner_id: Scanner identity string = MFG:CANON;CMD:MFNP1,MultiPASS 2.1;MDL:MF642C/643C/644C;CLS:IMG;DES:Canon MF642C/643C/644C; - length = 90 [bjnp] get_scanner_id: Scanner model = MF642C/643C/644C [bjnp] add_scanner: New scanner added: mfnp:// 192.168.1.111:8610/timeout=10000, serial 192.168.1.111, mac address: f4a997c93d62. [bjnp] sanei_bjnp_find_devices: Select returned, time left 0.499997.... [bjnp] sanei_find_devices: Discover response: [bjnp] 00000000:4d 46 4e 50 82 01 00 00 00 00 00 00 00 00 00 10 [bjnp] 00000010:00 01 80 00 06 04 f4 a9 97 c9 3d 62 c0 a8 01 6f [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or service not known [bjnp] bjnp_allocate_device(mfnp://192.168.1.111:8610/timeout=10000) 1 [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or service not known [bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.1.111 port 8610 [bjnp] bjnp_get_scanner_mac_address: Discover response: [bjnp] 00000000:4d 46 4e 50 82 01 00 00 00 00 00 00 00 00 00 10 [bjnp] 00000010:00 01 80 00 06 04 f4 a9 97 c9 3d 62 c0 a8 01 6f [bjnp] add_scanner: Scanner at mfnp://192.168.1.111:8610/timeout=10000 was added before, good! [bjnp] sanei_find_devices: scanner discovery finished... device `pixma:MF642C/643C/644C_192.168.1.111' is a CANON Canon i-SENSYS MF640 Series multi-function peripheral