diff --git a/Program.cs b/Program.cs
index aebf582..ca44504 100644
--- a/Program.cs
+++ b/Program.cs
@@ -20,6 +20,11 @@ using System.Diagnostics;
 using ln.perfdb.storage;
 using ln.logging;
 using System.Security.Cryptography;
+using ln.snmp.asn1;
+using System.Linq;
+using ln.types;
+using System.Runtime.InteropServices;
+using ln.snmp.rfc1213;
 
 namespace ln.skyscanner
 {
@@ -43,6 +48,13 @@ namespace ln.skyscanner
         public static void Main(string[] args)
         {
 
+            //CIDR cidr = CIDR.Parse("255.255.255.255/28");
+            //Logging.Log(LogLevel.INFO, "{0} {1}",cidr,cidr.ToNetwork());
+
+
+            //return;
+
+
             //PerfFile perfFile = new PerfFile("test.lnpv");
             //perfFile.Open();
 
@@ -78,40 +90,53 @@ namespace ln.skyscanner
             SNMPEngine.DEBUG = true;
 
             SNMPEngine engine = new SNMPEngine();
-            engine.Timeout = 4000;
+            engine.Timeout = 2000;
 
-            SnmpV1Endpoint v1endpoint = new SnmpV1Endpoint(engine, new IPEndPoint(IPAddress.Parse("10.113.254.4"), 161), "ghE7wUmFPoPpkRno");
+            SnmpV1Endpoint v1endpoint = new SnmpV1Endpoint(engine, new IPEndPoint(IPAddress.Parse("10.75.1.10"), 161), "ByFR4oW98hap");
             SnmpV2Endpoint v2endpoint = new SnmpV2Endpoint(engine, new IPEndPoint(IPAddress.Parse("10.113.254.4"), 161), "ghE7wUmFPoPpkRno");
 
-            USMEndpoint v3endpoint = new USMEndpoint(engine, new IPEndPoint(IPAddress.Parse("10.255.3.41"), 161));
+            USMEndpoint v3endpoint = new USMEndpoint(engine, new IPEndPoint(IPAddress.Parse("10.10.10.1"), 161));
             v3endpoint.AuthMethod = SnmpV3AuthMethod.SHA;
             v3endpoint.AuthKeyPhrase = "qVy3hnZJ2fov";
             //v3endpoint.AuthKeyPhrase = "maplesyrup";
             v3endpoint.Username = "skytron";
 
+
+
             SnmpEndpoint intf = v3endpoint;
 
-            Stopwatch stopWatch = Stopwatch.StartNew();
-            Sequence[][] ifTable = intf.snmpWalk(new String[] { 
-                    "1.3.6.1.2.1.2.2.1.2",
-                    "1.3.6.1.2.1.2.2.1.10",
-                    "1.3.6.1.2.1.2.2.1.16",
-                    "1.3.6.1.2.1.2.2.1.14",
-                    "1.3.6.1.2.1.2.2.1.20"
-                    });
-            stopWatch.Stop();
 
-            Console.WriteLine("Time for table walk: {0}ms", stopWatch.ElapsedMilliseconds);
+            RFC1213.Interface[] interfaces = RFC1213.GetInterfaces(v3endpoint);
 
-            foreach (Sequence[] sequences in ifTable)
+            foreach (RFC1213.Interface netIf in interfaces)
             {
-                foreach (Sequence sequence in sequences)
-                {
-                    Console.Write("{0}\t", sequence?.Items[1].Value);
-                }
-                Console.WriteLine("");
+                Logging.Log(LogLevel.INFO, "Interface: {0}",netIf);
             }
 
+
+
+            //Stopwatch stopWatch = Stopwatch.StartNew();
+            //Sequence[][] ifTable = intf.snmpWalk(new String[] { 
+            //        "1.3.6.1.2.1.2.2.1.2",
+            //        "1.3.6.1.2.1.2.2.1.10",
+            //        "1.3.6.1.2.1.2.2.1.16",
+            //        "1.3.6.1.2.1.2.2.1.14",
+            //        "1.3.6.1.2.1.2.2.1.20"
+            //        });
+            //stopWatch.Stop();
+
+            //Console.WriteLine("Time for table walk: {0}ms", stopWatch.ElapsedMilliseconds);
+
+            //foreach (Sequence[] sequences in ifTable)
+            //{
+            //    Console.Write("{0,24} ", sequences);
+            //    foreach (Sequence sequence in sequences)
+            //    {
+            //        Console.Write("{0}\t", sequence?.Items?[1].Value);
+            //    }
+            //    Console.WriteLine("");
+            //}
+
             engine.Close();
 
             //NodeIdentifier identifier = new NodeIdentifier(IPAddress.Parse("10.10.10.1"));
@@ -123,5 +148,78 @@ namespace ln.skyscanner
             //}
 
         }
+
+        public static void TestAuthKey(String filename,USMEndpoint v3endpoint)
+        {
+            FileStream fileStream = new FileStream(filename, FileMode.Open);
+            byte[] source = new byte[fileStream.Length];
+
+            int nread = fileStream.Read(source, 0, source.Length);
+
+            fileStream.Close();
+            fileStream.Dispose();
+
+            ASN1Value asn = new ASN1Value(source);
+            USMMessage usm = new USMMessage(asn);
+
+            byte[] repro1 = asn.AsByteArray;
+            byte[] repro2 = ((ASN1Value)usm).AsByteArray;
+
+            Logging.Log(LogLevel.DEBUG, "Source:      {0}", BitConverter.ToString(source));
+            Logging.Log(LogLevel.DEBUG, "Repro1:      {0}", BitConverter.ToString(repro1));
+            Logging.Log(LogLevel.DEBUG, "Repro2:      {0}", BitConverter.ToString(repro2));
+
+            if (!source.SequenceEqual(repro1))
+                Logging.Log(LogLevel.ERROR, "Repro1 does not match!");
+            else
+                Logging.Log(LogLevel.ERROR, "Repro1 matches!");
+
+            if (!source.SequenceEqual(repro2))
+                Logging.Log(LogLevel.ERROR, "Repro2 does not match!");
+            else
+                Logging.Log(LogLevel.ERROR, "Repro2 matches!");
+
+            if (!repro1.SequenceEqual(repro2))
+                Logging.Log(LogLevel.ERROR, "Repro1 != Repro2!");
+            else
+                Logging.Log(LogLevel.ERROR, "Repro1/2 match!");
+
+
+
+            usm.Dump();
+            usm.SecurityParameters.Dump();
+
+            byte[] auth1 = usm.SecurityParameters.msgAuthenticationParameters.Bytes;
+
+            usm.SecurityParameters.msgAuthenticationParameters.Bytes = new byte[12];
+
+            Logging.Log(LogLevel.DEBUG, "Source:          {0}", BitConverter.ToString(source));
+
+            v3endpoint.RemoteEngineID = usm.SecurityParameters.msgAuthoritativeEngineID;
+            v3endpoint.CacheAuthoritativeEngineTime = usm.SecurityParameters.msgAuthoritativeEngineTime;
+            v3endpoint.CacheAuthoritativeEngineBoots = usm.SecurityParameters.msgAuthoritativeEngineBoots;
+
+            v3endpoint.LocalizeKeys();
+
+            v3endpoint.AuthenticateMessage(usm);
+
+            byte[] auth2 = usm.SecurityParameters.msgAuthenticationParameters.Bytes;
+
+            Logging.Log(LogLevel.DEBUG, "Authenticated:   {0}", BitConverter.ToString(((ASN1Value)usm).AsByteArray));
+
+            Logging.Log(LogLevel.DEBUG, "Original Auth Token:   {0}", BitConverter.ToString(auth1));
+            Logging.Log(LogLevel.DEBUG, "Calculated Auth Token: {0}", BitConverter.ToString(auth2));
+
+            if (auth1.SequenceEqual(auth2))
+            {
+                Logging.Log(LogLevel.DEBUG, "MATCH");
+            }
+            else
+            {
+                Logging.Log(LogLevel.DEBUG, "NO MATCH");
+            }
+
+        }
+
     }
 }
diff --git a/ln.skyscanner.csproj b/ln.skyscanner.csproj
index dba5a58..7809d13 100644
--- a/ln.skyscanner.csproj
+++ b/ln.skyscanner.csproj
@@ -63,6 +63,10 @@
       <Project>{D471A566-9FB6-41B2-A777-3C32874ECD0E}</Project>
       <Name>ln.logging</Name>
     </ProjectReference>
+    <ProjectReference Include="..\ln.types\ln.types.csproj">
+      <Project>{8D9AB9A5-E513-4BA7-A450-534F6456BF28}</Project>
+      <Name>ln.types</Name>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 </Project>
\ No newline at end of file