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Add a test that exercises the ndo_change_rx_flags path through a macvlan -> bridge -> team -> dummy stack. This triggers dev_uc_add under addr_list_lock which flips promiscuity on the lower device. With the new work queue approach, this must not deadlock. Link: https://lore.kernel.org/netdev/20260214033859.43857-1-jiayuan.chen@linux.dev/ Reviewed-by: Breno Leitao <leitao@debian.org> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20260416185712.2155425-15-sdf@fomichev.me Signed-off-by: Paolo Abeni <pabeni@redhat.com>