A list of paths to match against the ID_PATH udev property of devices.
ID_PATH represents the topological persistent path of a device. It typically contains a subsystem string (pci, usb, platform, etc.) and a subsystem-specific identifier.
For PCI devices the path has the form "pci-$domain:$bus:$device.$function", where each variable is an hexadecimal value; for example "pci-0000:0a:00.0".
The path of a device can be obtained with "udevadm info /sys/class/net/$dev | grep ID_PATH=" or by looking at the "path" property exported by NetworkManager ("nmcli -f general.path device show $dev").
Each element of the list is a shell wildcard pattern.
See NMSettingMatch:interface-name for how special characters '|', '&', '!' and '\\' are used for optional and mandatory matches and inverting the pattern.