[ 2253.402860][T31955] br0: port 1(dummy0) entered blocking state
[ 2253.403097][T31955] br0: port 1(dummy0) entered disabled state
[ 2253.403321][T31955] dummy0: entered allmulticast mode
[ 2253.404942][T31955] dummy0: entered promiscuous mode
[ 2253.425282][T31956] br0: port 1(dummy0) entered blocking state
[ 2253.425470][T31956] br0: port 1(dummy0) entered forwarding state
[ 2255.370655][   T12] dummy0: left allmulticast mode
[ 2255.371022][   T12] dummy0: left promiscuous mode
[ 2255.371237][   T12] br0: port 1(dummy0) entered disabled state