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Merge pull request #4931 from robmry/internal_network 

Add a description of '--internal' to the docs
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Sebastiaan van Stijn 2024-03-11 12:41:29 +01:00 committed by GitHub
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docs/reference/commandline/network_create.md
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@ -162,7 +162,8 @@ equivalent Docker daemon flags used for docker0 bridge:
| `com.docker.network.container_iface_prefix` | - | Set a custom prefix for container interfaces |
The following arguments can be passed to `docker network create` for any
network driver, again with their approximate equivalents to `docker daemon`.
network driver, again with their approximate equivalents to Docker daemon
flags used for the docker0 bridge:
| Argument | Equivalent | Description |
|--------------|----------------|--------------------------------------------|
@ -183,6 +184,12 @@ $ docker network create \
### <a name="internal"></a> Network internal mode (--internal)
Containers on an internal network may communicate between each other, but not
with any other network, as no default route is configured and firewall rules
are set up to drop all traffic to or from other networks. Communication with
the gateway IP address (and thus appropriately configured host services) is
possible, and the host may communicate with any container IP directly.
By default, when you connect a container to an `overlay` network, Docker also
connects a bridge network to it to provide external connectivity. If you want
to create an externally isolated `overlay` network, you can specify the