@callback clear(ifname :: String.t()) :: :ok

Clear out a previously saved configuration

@callback enumerate() :: [String.t()]

Enumerate the interfaces that have saved configurations

This returns a list of interface names.

@callback load(ifname :: String.t()) :: {:ok, map()} | {:error, reason :: any()}

Load the configuration of an interface

@callback save(ifname :: String.t(), config :: map()) :: :ok | {:error, atom()}

Save the configuration for the specified interface