ScpControl/Utilities/PhysicalAddressExtensions.cs

using System.Net.NetworkInformation;

namespace ScpControl.Utilities
{
    public static class PhysicalAddressExtensions
    {
        public static string AsFriendlyName(this PhysicalAddress address)
        {
            if (address == null)
                return string.Empty;

            if (address.Equals(PhysicalAddress.None))
                return "00:00:00:00:00:00";

            var bytes = address.GetAddressBytes();

            return string.Format("{0:X2}:{1:X2}:{2:X2}:{3:X2}:{4:X2}:{5:X2}",
                bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5]);
        }
    }
}