[ 2097.665047][T20103] br0: port 1(dummy0) entered blocking state
[ 2097.665574][T20103] br0: port 1(dummy0) entered disabled state
[ 2097.665741][T20103] dummy0: entered allmulticast mode
[ 2097.666611][T20103] dummy0: entered promiscuous mode
[ 2097.695417][T20104] br0: port 1(dummy0) entered blocking state
[ 2097.695592][T20104] br0: port 1(dummy0) entered forwarding state
[ 2099.947247][   T12] dummy0: left allmulticast mode
[ 2099.948056][   T12] dummy0: left promiscuous mode
[ 2099.948370][   T12] br0: port 1(dummy0) entered disabled state