This page is about the host machine in Docker (ie the machine where the daemon is installed).
To see the network of hosts, see the page Docker - Host Network.
Before a host was created through the docker-machine executable (creation, start, stop,…) but with the WSL integration, it's no more.
This special DNS name resolves to the host machine's IP address from inside containers.
docker info
Containers: 35
Running: 1
Paused: 0
Stopped: 34
Images: 45
Server Version: 1.12.3
Storage Driver: aufs
Root Dir: /mnt/sda1/var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 186
Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host null overlay
Log:
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary:
containerd version:
runc version:
init version:
Security Options:
seccomp
Kernel Version: 4.4.27-boot2docker
Operating System: Boot2Docker 1.12.3 (TCL 7.2); HEAD : 7fc7575 - Thu Oct 27 17:23:17 UTC 2016
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 7.79GiB
Name: default
ID: 6CCC:JOTU:XXK3:ZJV6:7QTA:Y5LZ:EUAM:D3VM:XTVA:NQOY:5M2Z:KSC5
Docker Root Dir: /mnt/sda1/var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
File Descriptors: 23
Goroutines: 41
System Time: 2017-10-24T15:05:24.245401217Z
EventsListeners: 0
Registry: https://index.docker.io/v1/
Labels:
provider=virtualbox
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
where you can see: