Docker Desktop: Bridge Network doesn't show up in ipconfig on host

Docker Desktop
1

I have three containers that I have assigned to a bridge network in my docker-compose.yml file:

version: '3.8'
networks:
  mybridge:
    name: mybridge
    ipam:
      driver: default
      config:
        - subnet: 172.30.0.0/24
          gateway: 172.30.0.1

I get timeouts from 172.30.0.2 which is set up as:

services:
  web:
    build:
      dockerfile: Dockerfile
      context: ./
    container_name: web
    image: ubuntu-image
    ports:
      - 80:80
      - 443:443
    volumes:
      - ${HOME}/GIT_repository/www/:/var/www/html:rw
      - ${HOME}/GIT_repository/home:/var/www/html/home:rw
      - ${HOME}/GIT_repository/local:/var/local
    networks:
      mybridge:
        ipv4_address: 172.30.0.2

In my ipconfig output, I don’t find an entry for a 172.30.0.0/24 network.

What might I be missing? Could this have something to do with an internal windows firewall?

Note that this bridge network and containers works fine on my linux host.

Thanks,
Ed

2

That’s because all user defined bridge networks (such as the one in your compose file) are bridged to the docker_gwbridge

   brctl show

Since the containers use a network namespace (think of it as a partition), you will only be able to see the configuration in the container, but not on the host.

Update: my bad. I missed that it’s Docker Desktop. Forget what I wrote as it doesn’t apply to Docker Desktop, as it runs its docker engine in a utility vm. So what I wrote would be still true for the utility vm, but not for your host.