[ 2240.268194][T19919] br0: port 1(dummy0) entered blocking state
[ 2240.268382][T19919] br0: port 1(dummy0) entered disabled state
[ 2240.268546][T19919] dummy0: entered allmulticast mode
[ 2240.270110][T19919] dummy0: entered promiscuous mode
[ 2240.299967][T19920] br0: port 1(dummy0) entered blocking state
[ 2240.300594][T19920] br0: port 1(dummy0) entered forwarding state
[ 2242.683430][   T12] dummy0: left allmulticast mode
[ 2242.684683][   T12] dummy0: left promiscuous mode
[ 2242.684923][   T12] br0: port 1(dummy0) entered disabled state