diff --git a/skyscraper8/Ietf/Rfc4236_ULE/UleEventHandler.cs b/skyscraper8/Ietf/Rfc4236_ULE/UleEventHandler.cs
index b774498..e746118 100644
--- a/skyscraper8/Ietf/Rfc4236_ULE/UleEventHandler.cs
+++ b/skyscraper8/Ietf/Rfc4236_ULE/UleEventHandler.cs
@@ -18,6 +18,7 @@ namespace skyscraper8.Ietf.Rfc4236_ULE
 		/// <param name="errorNo">
 		/// Set this to:
 		/// 1* for a CRC error.
+		/// 2* for an invalid adaptation field control.
 		/// </param>
 		void OnUleError(int pid, int errorNo);
 	}
diff --git a/skyscraper8/Ietf/Rfc4236_ULE/UlePacketProcessor.cs b/skyscraper8/Ietf/Rfc4236_ULE/UlePacketProcessor.cs
index 6e627e6..b2a8883 100644
--- a/skyscraper8/Ietf/Rfc4236_ULE/UlePacketProcessor.cs
+++ b/skyscraper8/Ietf/Rfc4236_ULE/UlePacketProcessor.cs
@@ -27,7 +27,11 @@ namespace skyscraper8.Ietf.Rfc4236_ULE
 
 		public void PushPacket(TsPacket packet)
 		{
-
+			if (packet.AdaptionFieldControl != 1)
+			{
+				_eventHandler.OnUleError(_pid, 2);
+				return;
+			}
 			if (packet.PayloadUnitStart)
 			{
 				PushPusiPacket(packet);
@@ -161,7 +165,7 @@ namespace skyscraper8.Ietf.Rfc4236_ULE
 			PhysicalAddress source = new PhysicalAddress(ms.ReadBytes(6));
 			ushort etherType = ms.ReadUInt16BE();
 			byte[] contents = ms.ReadBytes(ms.GetAvailableBytes());
-			//_eventHandler.OnEthernetFrame(_pid, destination, source, etherType, contents);
+			_eventHandler.OnEthernetFrame(_pid, destination, source, etherType, contents);
 		}
 
 		public void PacketLoss()