[ 2140.899655][T22983] br0: port 1(dummy0) entered blocking state
[ 2140.900762][T22983] br0: port 1(dummy0) entered disabled state
[ 2140.900994][T22983] dummy0: entered allmulticast mode
[ 2140.902066][T22983] dummy0: entered promiscuous mode
[ 2140.925482][T22984] br0: port 1(dummy0) entered blocking state
[ 2140.925730][T22984] br0: port 1(dummy0) entered forwarding state
[ 2142.827973][   T70] dummy0: left allmulticast mode
[ 2142.828508][   T70] dummy0: left promiscuous mode
[ 2142.828739][   T70] br0: port 1(dummy0) entered disabled state