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Document how to disable the default bridge (#5158)

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Misty Stanley-Jones 2017-11-06 14:35:12 -08:00 committed by GitHub
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engine/userguide/networking/index.md
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@ -275,6 +275,26 @@ The default `docker0` bridge network supports the use of port mapping and
network. This approach is not recommended. Where possible, you should use network. This approach is not recommended. Where possible, you should use
[user-defined bridge networks](#user-defined-networks) instead. [user-defined bridge networks](#user-defined-networks) instead.
#### Disable the default bridge network
If you do not want the default bridge network to be created at all, add the
following to the `daemon.json` file. This only applies when the Docker daemon
runs on a Linux host.
```json
"bridge": "none",
"iptables": "false"
```
Restart Docker for the changes to take effect.
You can also manually start the `dockerd` with the flags `--bridge=none
--iptables=false`. However, this may not start the daemon with the same
environment as the system init scripts, so other behaviors may be changed.
Disabling the default bridge network is an advanced option that most users will
not need.
## User-defined networks ## User-defined networks
It is recommended to use user-defined bridge networks to control which It is recommended to use user-defined bridge networks to control which