[ 2399.446946][ T6628] br0: port 1(dummy0) entered blocking state
[ 2399.447274][ T6628] br0: port 1(dummy0) entered disabled state
[ 2399.447565][ T6628] dummy0: entered allmulticast mode
[ 2399.448678][ T6628] dummy0: entered promiscuous mode
[ 2399.476127][ T6629] br0: port 1(dummy0) entered blocking state
[ 2399.476567][ T6629] br0: port 1(dummy0) entered forwarding state
[ 2402.011383][   T12] dummy0: left allmulticast mode
[ 2402.012127][   T12] dummy0: left promiscuous mode
[ 2402.012480][   T12] br0: port 1(dummy0) entered disabled state