[ 2211.999846][T12237] br0: port 1(dummy0) entered blocking state
[ 2212.000079][T12237] br0: port 1(dummy0) entered disabled state
[ 2212.000295][T12237] dummy0: entered allmulticast mode
[ 2212.001894][T12237] dummy0: entered promiscuous mode
[ 2212.026077][T12238] br0: port 1(dummy0) entered blocking state
[ 2212.026430][T12238] br0: port 1(dummy0) entered forwarding state
[ 2214.288483][   T12] dummy0: left allmulticast mode
[ 2214.289351][   T12] dummy0: left promiscuous mode
[ 2214.289591][   T12] br0: port 1(dummy0) entered disabled state