Get physical mac address

Product support
1

Hello I created one balena app and I want to get the physical mac address from eth0 interface.
In order to get the mac I am using the native NodeJS method networkInterfaces from os .
Because of the virtual network that I have created in composer file the networkInterfaces return on eth0 a virtual address.
Can you help me how I can have access to the real one?

version: '2'
volumes:
   resin-data:
services:
   testApp:
      privileged: true
      build: ./testApp
      networks:
         vpcbr:
            ipv4_address: 10.5.0.3
   testApp2:
      privileged: true
      build: ./testApp2
      networks:
         vpcbr:
            ipv4_address: 10.5.0.4
networks:
   vpcbr:
      driver: bridge
      ipam:
         config:
            - subnet: 10.5.0.0/16
              gateway: 10.5.0.1

Thanks in advance.

5

Hello Panagiotis, actually you are seeing the eth0 mac address from your virtual assigned to your container.
As far as i know you would need to have a container with network_mode: host in order to get the physical eth0 mac address.

7

Thanks for your help.
I decouple my service in a new container and apply network_mode: host there.