[ 1827.457885] br0: port 1(dummy0) entered blocking state
[ 1827.457935] br0: port 1(dummy0) entered disabled state
[ 1827.457978] dummy0: entered allmulticast mode
[ 1827.458031] dummy0: entered promiscuous mode
[ 1827.461618] br0: port 1(dummy0) entered blocking state
[ 1827.461651] br0: port 1(dummy0) entered forwarding state
[ 1827.733968] dummy0: left allmulticast mode
[ 1827.734006] dummy0: left promiscuous mode
[ 1827.734034] br0: port 1(dummy0) entered disabled state