This file is indexed.

/etc/sane.d/epson2.conf is in libsane 1.0.23-3ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# epson2.conf
#
# here are some examples for how to configure the EPSON2 backend

# SCSI
scsi EPSON
# for the GT-6500:
#scsi "EPSON SC"

# Parallel port
#pio 0x278
#pio 0x378
#pio 0x3BC

# USB
usb

# For libusb support for unknown scanners use the following command
# usb <product ID> <device ID>
# e.g.:
# usb 0x4b8 0x110

# Network
# 
# net 192.168.1.123
net autodiscovery