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Add fedora 22 install docs warning about systemd-network

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With systemd in version 219 IP forwarding should be forced in the interface configuration file.

Signed-off-by: yyekhlef <yyekhlef@gmail.com>
Upstream-commit: 35aebdc803e2ffedf3208f0fd27a7652562fc007
Component: engine
This commit is contained in:
Youcef YEKHLEF
2015-08-04 17:02:59 +02:00
committed by yyekhlef
parent ab644e28c0
commit 67cdf00aed
1 changed files with 3 additions and 1 deletions
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4
components/engine/docs/installation/fedora.md
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@@ -208,7 +208,7 @@ learn how to [customize your Systemd Docker daemon options](/articles/systemd/).
## Running Docker with a manually-defined network
If you manually configure your network using `systemd-network` with fedora version 22, containers you start with Docker may be unable to access your network.
If you manually configure your network using `systemd-network` with `systemd` version 219 or higher, containers you start with Docker may be unable to access your network.
Beginning with version 220, the forwarding setting for a given network (`net.ipv4.conf.<interface>.forwarding`) defaults to *off*. This setting prevents IP forwarding. It also conflicts with Docker which enables the `net.ipv4.conf.all.forwarding` setting within a container.
To work around this, edit the `<interface>.network` file in
@@ -218,6 +218,8 @@ To work around this, edit the `<interface>.network` file in
[Network]
...
IPForward=kernel
# OR
IPForward=true
...
```