[ 2213.879563][ T2279] br0: port 1(dummy0) entered blocking state
[ 2213.879954][ T2279] br0: port 1(dummy0) entered disabled state
[ 2213.880292][ T2279] dummy0: entered allmulticast mode
[ 2213.881387][ T2279] dummy0: entered promiscuous mode
[ 2213.914627][ T2280] br0: port 1(dummy0) entered blocking state
[ 2213.915022][ T2280] br0: port 1(dummy0) entered forwarding state
[ 2216.475566][   T12] dummy0: left allmulticast mode
[ 2216.475902][   T12] dummy0: left promiscuous mode
[ 2216.476251][   T12] br0: port 1(dummy0) entered disabled state