[ 1587.349874] br0: port 1(dummy0) entered blocking state
[ 1587.349946] br0: port 1(dummy0) entered disabled state
[ 1587.350012] dummy0: entered allmulticast mode
[ 1587.350106] dummy0: entered promiscuous mode
[ 1587.353112] br0: port 1(dummy0) entered blocking state
[ 1587.353174] br0: port 1(dummy0) entered forwarding state
[ 1587.547372] dummy0: left allmulticast mode
[ 1587.547407] dummy0: left promiscuous mode
[ 1587.547476] br0: port 1(dummy0) entered disabled state