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Suppress "IPv4 forwarding" warning for --net=host

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Containers using the host network stack (--net=host)
are not affected by "ip-forwarding" being disabled,
so there's not need to show a warning.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2016-05-18 20:10:31 +02:00
parent af705ca0ae
commit 5fb7f9b29e
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2 changed files with 6 additions and 1 deletions
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3
docs/userguide/networking/default_network/container-communication.md
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@ -37,6 +37,9 @@ or to turn it on manually:
net.ipv4.conf.all.forwarding = 1
```
> **Note**: this setting does not affect containers that use the host
> network stack (`--net=host`).
Many using Docker will want `ip_forward` to be on, to at least make
communication _possible_ between containers and the wider world. May also be
needed for inter-container communication if you are in a multiple bridge setup.