[ 1887.448850][T12011] br0: port 1(dummy0) entered blocking state
[ 1887.449037][T12011] br0: port 1(dummy0) entered disabled state
[ 1887.449187][T12011] dummy0: entered allmulticast mode
[ 1887.450441][T12011] dummy0: entered promiscuous mode
[ 1887.477122][T12012] br0: port 1(dummy0) entered blocking state
[ 1887.477362][T12012] br0: port 1(dummy0) entered forwarding state
[ 1889.349757][   T70] dummy0: left allmulticast mode
[ 1889.350038][   T70] dummy0: left promiscuous mode
[ 1889.350229][   T70] br0: port 1(dummy0) entered disabled state