[ 2227.419819][T20068] br0: port 1(dummy0) entered blocking state
[ 2227.420165][T20068] br0: port 1(dummy0) entered disabled state
[ 2227.420523][T20068] dummy0: entered allmulticast mode
[ 2227.421566][T20068] dummy0: entered promiscuous mode
[ 2227.447380][T20069] br0: port 1(dummy0) entered blocking state
[ 2227.448223][T20069] br0: port 1(dummy0) entered forwarding state
[ 2229.937988][   T70] dummy0: left allmulticast mode
[ 2229.939378][   T70] dummy0: left promiscuous mode
[ 2229.939719][   T70] br0: port 1(dummy0) entered disabled state