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engine: remove dated section on ip forwarding 

Signed-off-by: David Karlsson <david.karlsson@docker.com>
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David Karlsson 2023-05-25 13:11:10 +02:00
parent c0b23bf570
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network/drivers/bridge.md
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@ -208,29 +208,6 @@ addresses.
When you create your network, you can specify the `--ipv6` flag to enable When you create your network, you can specify the `--ipv6` flag to enable
IPv6. You can't selectively disable IPv6 support on the default `bridge` network. IPv6. You can't selectively disable IPv6 support on the default `bridge` network.
## Enable forwarding from Docker containers to the outside world
By default, traffic from containers connected to the default bridge network is
**not** forwarded to the outside world. To enable forwarding, you need to change
two settings. These are not Docker commands and they affect the Docker host's
kernel.
1. Configure the Linux kernel to allow IP forwarding.
```console
$ sysctl net.ipv4.conf.all.forwarding=1
```
2. Change the policy for the `iptables` `FORWARD` policy from `DROP` to
`ACCEPT`.
```console
$ sudo iptables -P FORWARD ACCEPT
```
These settings do not persist across a reboot, so you may need to add them to a
start-up script.
## Use the default bridge network ## Use the default bridge network
The default `bridge` network is considered a legacy detail of Docker and is not The default `bridge` network is considered a legacy detail of Docker and is not