[ 1961.731858][T21822] br0: port 1(dummy0) entered blocking state
[ 1961.732062][T21822] br0: port 1(dummy0) entered disabled state
[ 1961.732238][T21822] dummy0: entered allmulticast mode
[ 1961.733141][T21822] dummy0: entered promiscuous mode
[ 1961.756136][T21823] br0: port 1(dummy0) entered blocking state
[ 1961.756421][T21823] br0: port 1(dummy0) entered forwarding state
[ 1963.810331][   T12] dummy0: left allmulticast mode
[ 1963.810645][   T12] dummy0: left promiscuous mode
[ 1963.810861][   T12] br0: port 1(dummy0) entered disabled state