Prometheus container_network_receive_bytes_total metric is not grouped by container ports

[GitGab19]

Hi everybody, I'm running many containers which are connecting each-others through different ports.
I'm collecting metrics using cadvisor and prometheus.
I would be interested in filtering/selecting the container ports which I want to collect metrics from.
As it is now, I can get the container_network_receive_bytes_total metric, but it will be the sum of every byte received from the several ports where a container is listening to. But, how can I choose which ports I want to analyze with cadvisor?

Hope it's clear enough,
thanks for your time