6901ea51dc
As seen in https://github.com/docker/docker/issues/14738 there is general instability in the later kernels under race conditions when ioctl calls are used in parallel with netlink calls for various operations. (We are yet to narrow down to the exact root-cause on the kernel). For those older kernels which doesnt support some of the netlink APIs, we can fallback to using ioctl calls. Hence bringing back the original code that used netlink (https://github.com/docker/libnetwork/pull/349). Also, there was an existing bug in bridge creation using netlink which was setting bridge mac during bridge creation. That operation is not supported in the netlink library (and doesnt throw an error either). Included a fix for that condition by setting the bridge mac after creating the bridge. Signed-off-by: Madhu Venugopal <madhu@docker.com> |
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