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Joachim Wiberg
674fd6c396
Previously at least one end of a veth pair had to remain in the host namespace, because that end created and destroyed the pair. Assigning both ends to containers left no one to create it. Select a deterministic primary end so exactly one side creates the pair. When the primary is itself a container interface, create the pair in the host namespace before the container starts; CNI host-device then moves each end into its container. Teardown is deferred to the container removal script so the pair does not linger and block re-creation. Drop the now-obsolete limitation notes from the documentation and YANG, and add a regression test connecting two containers over a veth pair. Fixes: #941 Signed-off-by: Joachim Wiberg <troglobit@gmail.com>