[ 2120.443368][T11392] br0: port 1(dummy0) entered blocking state
[ 2120.443594][T11392] br0: port 1(dummy0) entered disabled state
[ 2120.444468][T11392] dummy0: entered allmulticast mode
[ 2120.445990][T11392] dummy0: entered promiscuous mode
[ 2120.471978][T11393] br0: port 1(dummy0) entered blocking state
[ 2120.472244][T11393] br0: port 1(dummy0) entered forwarding state
[ 2122.873316][   T12] dummy0: left allmulticast mode
[ 2122.874533][   T12] dummy0: left promiscuous mode
[ 2122.874847][   T12] br0: port 1(dummy0) entered disabled state