Thank you for the reply!After experimenting more the problem is not related to docker specifically but to the docker networks. When I run the same experiment outside a docker network I am able to capture packets, however, when the containers are deployed in a docker network I cannot capture packets. Does anyone know why this might happen? Or was able to capture the packets of docker containers inside networks?
Best Regards, Sebastião Amaro A 2021-06-01 14:12, Toke Høiland-Jørgensen escreveu:
Sebastião Santos Boavida Amaro <sebastiao.amaro@xxxxxxxxxxxxxxxxxx> writes:Hello! I am trying to use xdp_stats[1] (this program prints packets passed/dropped) on the ethernet devices created by docker containers(veth). I have iperf exchanging messages between containers but xdp_stats does not capture any of the packets (XDP_PASS values do not change) and CPU usage goes to 100%. It works fine on my laptop'snetwork device, but I have these issues with the docker network devicesand I don't understand why.I don't think there's anything special about the veth devices Docker creates; so my immediate thought would be that this is due to differences in the kernel versions you're running on your laptop vs on docker. Some more details on this would be required to say anything more, though... -Toke
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