Monitoring host traffic with node-exporter running in container not in local network

Question

I'm using docker swarm and a public network for my containers. But I need to monitor traffic usage on the machine hosting the container (whichever that is). node_network_receive_bytes_total seems to be the metric for that but it is measuring the container traffic, not the host's. ChatGPT recommended the following configuration, which I expected to work. It also suggested using the volume - /var/run/netns:/var/run/netns:ro but there isn't a /var/run/netns on my machine.

I cannot use network: local so this question is not helpful. Also this one is inconclusive

  node_exporter:
    image: ubuntu/alertmanager:0.25.0-22.04_stable
    pid: "host"
    networks:
      - my-proxy-public
    volumes:
      - /sys:/host/sys:ro
      - /:/rootfs:ro
      - /proc:/host/proc:ro
      - /etc/hostname:/etc/nodename
    deploy:
      mode: global
    command:
      - '--path.procfs=/host/proc'
      - '--path.rootfs=/rootfs'
      - '--path.sysfs=/host/sys'
      - '--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|host|etc)($$|/)'
      - '--collector.textfile.directory=/home/'
      - '--collector.meminfo_numa'
      - '--no-collector.ipvs'

How can I effectively monitor the traffic usage on the host machine instead of the container?