$ docker run -d --name test4 --network none busybox /bin/sh -c "while true; do sleep 3600; done"
$ docker network ls
  NETWORK ID     NAME   DRIVER   SCOPE
  6ffb3a36e003   none   null     local
$ docker inspect 6ffb3a36e003
  "Containers": {
    "82fe202fa7e5082......": {
        "Name": "test4",
        "EndpointID": "3e53476f3809c7......",
        "MacAddress": "",
        "IPv4Address": "",
        "IPv6Address": ""
    }
  }
$ docker exec -it test4 ip a
  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo