We are facing a strange issue, we have the following setup for our application. We wanted to capture packets using dpdk pdump for our application, and started to notice an issue in capturing on DPDK 21.11 

So we went back to DPDK 20.11 and we still saw the issue. 

Think there is an issue in the pdump library to capture packets on the secondary interface. But I'm not sure where to look. 

APP1 - Primary APP

APP2 - Secondary APP.

Ports and ring inits are done by APP1 for APP2.

We are able to capture packets using the standard example application of pdump and capture on port 0, but we are not able to capture on port1. 

Has anyone come across this issue? Is there an open bug for this?

The multi process is working properly, and we are able to transmit and receive packets on the secondary interface without any issue. We are facing issue only on capturing packets on that interface(port1). 

Are there any pointers where I can start to look?

Thanks & Regards,

Navin Srinivas