[Buildroot] [Bug 13466] creation of bridge interface via interfaces does not work
bugzilla at busybox.net
bugzilla at busybox.net
Wed Feb 17 16:26:55 UTC 2021
https://bugs.busybox.net/show_bug.cgi?id=13466
--- Comment #1 from Ryan Barnett <ryan.barnett at rockwellcollins.com> ---
Hello,
The supports for bridges in the /etc/network/interfaces file is provide by
Debian through the combination of having two packages installed: bridge-utils
and ifupdown. Debian has customized bridge-utils package to provide support for
bridge syntax in the /etc/network/interfaces file with the ifupdown package.
On Debian based distributions, the syntax for bridge in /etc/network/interfaces
is accomplished utilizing if-pre-up.d/bridge and if-post-down.d/bridge hooks as
seen from the list of the Debian package files [1].
Buildroot utilizes the official bridge-utils source from kernel.org which does
not contain any of these ifupdown hooks [2].
In order to support this syntax utilizing buildroot, I'd recommend that the
full version of ifupdown be built. Support for the bridge hooks could be added
by utilizing a BR2_ROOTFS_OVERLAY [3] which installs the hooks for bridge
support in the /etc/network/if-pre-up.d/ and fi-post-down.d/ hook locations
utilizing the Debian source [4]
Thanks,
-Ryan
[1] - https://packages.debian.org/stretch/amd64/bridge-utils/filelist
[2] -
https://git.busybox.net/buildroot/tree/package/bridge-utils/bridge-utils.mk#n9
[3] - https://buildroot.org/downloads/manual/manual.html#rootfs-custom
[4] - https://sources.debian.org/src/bridge-utils/1.6-2/debian/ifupdown.sh/
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