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25250f40e2
Virtual devices (e.g., VXLAN) that do not have a notion of a carrier are created with an "UNKNOWN" operational state which some users find confusing [1]. It is possible to set the operational state from user space either during device creation or afterwards and some applications will start doing that in order to avoid the above problem. Add a test for this functionality to ensure it does not regress. [1] https://lore.kernel.org/netdev/20241119153703.71f97b76@hermes.local/ Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250717125151.466882-1-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>