public async Task <bool> getMacIsBanned([FromBody] string MacAddress)
        {
            DateTime  now = DateTime.UtcNow;
            BannedMac ban = (from b in db.BannedMac
                             where b.MacAddress == MacAddress &&
                             b.FromDt <= now &&
                             (b.ToDt == null || b.ToDt > now)
                             select b).FirstOrDefault();

            return(ban != null ? true : false);
        }
        public async Task <dynamic> banMac([FromBody] BanRequestDTO request)
        {
            DateTime  now    = DateTime.UtcNow;
            BannedMac newBan = new BannedMac()
            {
                MacAddress = request.MacAddress,
                FromDt     = now,
                ToDt       = request.ToDt
            };

            db.BannedMac.Add(newBan);
            db.SaveChanges();
            return(Ok("Mac Banned"));
        }