Correctly parse and add submitted networks to sets to reflect the
behavior of the `nft` command line.
Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>
This is already caught and handled before the switch logic and would
hence never be reached here.
Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>
