Does anyone have any suggestions for getting tcpdump to work with the Napatech NT200A02. I have the following issues:

1. Running the command tcpdump -nni nt:0 host 10.1.1.1 and host 10.1.1.2 returns the error [debug][rules.c:323] Conflict merging filters on src ip
2. Using the net keyword returns no packets. (Packets are confirmed to exist on the card using grep.)
3. Occasional error about not enough host buffers.  Restarting the drivers with ntstop and ntstart fixes the issue.

We have the latest pf_ring and napatech drivers installed. Libpcap was installed from Napatech.

/usr/local/bin/tcpdump –version
tcpdump version 4.99.4
libpcap version 1.10.1 (with TPACKET_V3)
OpenSSL 1.1.1k FIPS 25 Mar 2021

Any help is appreciated.

Thanks.

Steve