create type inet_protocol as enum ('tcp', 'udp');

create table if not exists client (
 client_id uuid NOT NULL primary key unique,
 created timestamp NOT NULL,
 ip_address inet NOT NULL,
 protocol inet_protocol NOT NULL,
 enabled boolean NOT NULL,
 last_packets bigint default 0,
 last_activity timestamp,
 primary key (client_id, ip_address, protocol)
);

create index if not exists client_ip_address_index on client (ip_address);