How to remove duplicate packets in real time
Use hardware acceleration on the Gen3 capture card to remove duplicate packets before they are captured to disk or acknowledged by Observer. This is called packet deduplication.
Prerequisite(s):  
Hardware acceleration must be enabled on your Gen3 capture card for this feature to function. Hardware acceleration for your virtual adapter is enabled by default.
 
To use hardware acceleration to skip duplicate packets:
1. Right-click the Gen3 capture card-equipped probe instance and choose Probe or Device Properties.
2. Click the Virtual Adapters tab.
3. Click Edit Adapter.
4. In the Assign Ports to Virtual Adapter window, select Skip duplicate packets and click OK.
5. Click Skip Duplicate Packets Configuration.
The Skip Duplicate Packets Using Hardware Accelerated Capture Adapter dialog appears.
 
Figure 98: Skip Duplicate Packets Using Hardware Accelerated Capture Adapter
Screenshot Gen2 Skip Duplicate PacketsScreenshot Gen2 Skip Duplicate Packets Screenshot Gen2 Skip Duplicate PacketsScreenshot Gen2 Skip Duplicate Packets
 
6. Select how duplicate packets are recognized by the Gen3 capture card and click OK.
Example: For example, by selecting Examine IP time to live (TTL), the packet time to live is considered when determining a duplicate packet. If the option is cleared, TTL is ignored for all consideration of what is, and what is not, a duplicate packet.
7. Click OK to enable packet deduplication.
 
The Gen3 capture card now skips duplicate packets that it receives on the active instance. The duplicate packets will not be saved to disk or acknowledged by Observer.