don't use a random invalid port

Author: vbBerni

PcapDotNet/src/PcapDotNet.Core.Test/WiresharkCompareTests.cs

@@ -419,24 +419,19 @@ private static void CreateRandomUdpPayload(Random random, UdpLayer udpLayer, Lis
                 case 1:
                     {
                         DhcpLayer dhcpLayer = random.NextDhcpLayer();
-                        layers.Add(dhcpLayer);
-
-                        if (random.NextBool())
-                        {
-                            udpLayer.SourcePort = (ushort)(random.NextBool() ? 67 : 68);
-                        }
-                        else
-                        {
-                            udpLayer.DestinationPort = 5355;
-                        }
-                        if (random.NextBool())
-                        {
-                            udpLayer.SourcePort = (ushort)(random.NextBool() ? 67 : 68);
+                        layers.Add(dhcpLayer);
+
+                        if (random.NextBool())
+                        {
+                            udpLayer.SourcePort = 67 ;
+                            udpLayer.DestinationPort = 68;
                         }
-                        else
-                        {
-                            udpLayer.SourcePort = 5355;
+                        else
+                        {
+                            udpLayer.SourcePort = 68;
+                            udpLayer.DestinationPort = 67;
                         }
+
                         break;
                     }