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Fix libcontainer network support on rhel6

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It seems that netlink in older kernels, including RHEL6, does not
support RTM_SETLINK with IFLA_MASTER. It just silently ignores it, reporting
no error, causing netlink.NetworkSetMaster() to not do anything yet
return no error.

We fix this by introducing and using AddToBridge() in a very similar manner
to CreateBridge(), which use the old ioctls directly.

This fixes https://github.com/dotcloud/docker/issues/4668

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
This commit is contained in:
Alexander Larsson 2014-04-09 15:41:14 +02:00
parent 2538689b31
commit db1a117450
3 changed files with 35 additions and 1 deletions
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4
netlink/netlink_unsupported.go
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@ -63,3 +63,7 @@ func NetworkLinkDown(iface *net.Interface) error {
func CreateBridge(name string, setMacAddr bool) error {
return ErrNotImplemented
}
func AddToBridge(iface, master *net.Interface) error {
return ErrNotImplemented
}