/// <summary>
/// Remove IPConfig
/// </summary>
/// <param name="nic">Network device.</param>
public static void RemoveIPConfig(NetworkDevice nic)
{
IPConfig config = NetworkConfiguration.Get(nic);
AddressMap.Remove(config.IPAddress.Hash);
MACMap.Remove(nic.MACAddress.Hash);
IPConfig.Remove(config);
NetworkConfiguration.Remove(nic);
}