Enable packet capture for debugging #453
Description
Traffic on DPDK ports can be captured and displayed for debugging purposes:
https://doc.dpdk.org/guides/howto/packet_capture_framework.html
We should investigate whether Gatekeeper can support this feature, either by default or in a debugging mode.
Some relevant notes from the page above:
The dpdk-pdump tool can only be used in conjunction with a primary application which has the packet capture framework initialized already.
The dpdk-pdump tool depends on the libpcap based PMD.
This could be useful for issues like #451.