GetMachineIdentifier, used to identify machines in a cluster

MachineIdentifier.cs

using System;
using System.Net.NetworkInformation;

namespace ServiceLayer.Utilities.Identity
{
    /// <summary>
    /// Class used to get a unique machine identifier
    /// </summary>
    public static class MachineIdentifier
    {
        /// <summary>
        /// Gets a unique machine identifier from the machines MAC address.
        /// </summary>
        /// <returns></returns>
        public static uint GetMachineIdentifier()
        {
            // Get the first MAC address and use that as machine identifier.
            var nics = NetworkInterface.GetAllNetworkInterfaces();

            foreach (var adapter in nics)
            {
                var address = adapter.GetPhysicalAddress();
                var bytes = address.GetAddressBytes();

                if (bytes.Length > 0)
                {
                    var uniqueId = BitConverter.ToUInt32(bytes, 0);
                    return uniqueId;
                }
            }

            // No MAC addresses, return current timestamp.
            return Convert.ToUInt32(DateTime.Now.TimeOfDay.TotalMilliseconds);
        }
    }
}