[ 1894.864182][ T3351] br0: port 1(dummy0) entered blocking state
[ 1894.864371][ T3351] br0: port 1(dummy0) entered disabled state
[ 1894.864540][ T3351] dummy0: entered allmulticast mode
[ 1894.865405][ T3351] dummy0: entered promiscuous mode
[ 1894.900139][ T3352] br0: port 1(dummy0) entered blocking state
[ 1894.900314][ T3352] br0: port 1(dummy0) entered forwarding state
[ 1896.875187][   T12] dummy0: left allmulticast mode
[ 1896.875420][   T12] dummy0: left promiscuous mode
[ 1896.875694][   T12] br0: port 1(dummy0) entered disabled state