[ 2217.012375][ T5269] br0: port 1(dummy0) entered blocking state
[ 2217.012609][ T5269] br0: port 1(dummy0) entered disabled state
[ 2217.012814][ T5269] dummy0: entered allmulticast mode
[ 2217.014250][ T5269] dummy0: entered promiscuous mode
[ 2217.037217][ T5270] br0: port 1(dummy0) entered blocking state
[ 2217.037453][ T5270] br0: port 1(dummy0) entered forwarding state
[ 2219.288102][   T12] dummy0: left allmulticast mode
[ 2219.288943][   T12] dummy0: left promiscuous mode
[ 2219.289177][   T12] br0: port 1(dummy0) entered disabled state