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One can define an 'altname' for an interface. That name is valid of if_nametoindex but it doesn't appear in `/sys/class/net`: ``` sudo ip link property add dev enp0s31f6 altname eno ``` This creates an altname eno for the existing interface enp0s31f6 Before, using eno, would lead to an error in `realpath`. Ref: https://www.reddit.com/r/Polybar/comments/q8f0ye/error_disabling_module_network_reason_realpath/hgqpq1m/?context=3