[ 1753.876986] br0: port 1(dummy0) entered blocking state
[ 1753.877063] br0: port 1(dummy0) entered disabled state
[ 1753.877133] dummy0: entered allmulticast mode
[ 1753.877222] dummy0: entered promiscuous mode
[ 1753.880826] br0: port 1(dummy0) entered blocking state
[ 1753.880861] br0: port 1(dummy0) entered forwarding state
[ 1754.130797] dummy0: left allmulticast mode
[ 1754.130868] dummy0: left promiscuous mode
[ 1754.130929] br0: port 1(dummy0) entered disabled state