code: func (t *IPsTable) fetch(c context.Context) error {
  	db := database.Get(c)
  	rows, err := db.QueryContext(c, `
  		SELECT id, ipv4, vlan_id
  		FROM ips
  	`)
  	if err != nil {
  		return errors.Annotate(err, "failed to select IP addresses").Err()
  	}
  	defer rows.Close()
  	for rows.Next() {
  		ip := &IP{}
  		if err := rows.Scan(&ip.Id, &ip.IPv4, &ip.VLANId); err != nil {
  			return errors.Annotate(err, "failed to scan IP address").Err()
  		}
  		t.current = append(t.current, ip)
  	}
  	return nil
  }
docs: // fetch fetches the IP addresses from the database.