[ 1871.702854][ T5743] br0: port 1(dummy0) entered blocking state
[ 1871.703044][ T5743] br0: port 1(dummy0) entered disabled state
[ 1871.703207][ T5743] dummy0: entered allmulticast mode
[ 1871.704084][ T5743] dummy0: entered promiscuous mode
[ 1871.727650][ T5744] br0: port 1(dummy0) entered blocking state
[ 1871.727829][ T5744] br0: port 1(dummy0) entered forwarding state
[ 1873.627576][   T12] dummy0: left allmulticast mode
[ 1873.627733][   T12] dummy0: left promiscuous mode
[ 1873.627929][   T12] br0: port 1(dummy0) entered disabled state