[ 2268.108213][ T7169] br0: port 1(dummy0) entered blocking state
[ 2268.108400][ T7169] br0: port 1(dummy0) entered disabled state
[ 2268.108566][ T7169] dummy0: entered allmulticast mode
[ 2268.109411][ T7169] dummy0: entered promiscuous mode
[ 2268.140297][ T7170] br0: port 1(dummy0) entered blocking state
[ 2268.140734][ T7170] br0: port 1(dummy0) entered forwarding state
[ 2270.107079][   T12] dummy0: left allmulticast mode
[ 2270.108187][   T12] dummy0: left promiscuous mode
[ 2270.108421][   T12] br0: port 1(dummy0) entered disabled state