`banaction = nftables[type=multiport]` with `protocol="tcp,udp,sctp"` in jail replace 3 separate actions.
more robust if deleting multiple references to set (rules in chain)
- nftables-common is removed
- nftables-allports is obsolete, replaced by nftables[type=allports]
- nftables-multiport is obsolete, replaced by nftables[type=multiport]