[ 1963.244319][T21372] br0: port 1(dummy0) entered blocking state
[ 1963.244508][T21372] br0: port 1(dummy0) entered disabled state
[ 1963.244669][T21372] dummy0: entered allmulticast mode
[ 1963.245529][T21372] dummy0: entered promiscuous mode
[ 1963.279121][T21373] br0: port 1(dummy0) entered blocking state
[ 1963.279419][T21373] br0: port 1(dummy0) entered forwarding state
[ 1965.240139][   T12] dummy0: left allmulticast mode
[ 1965.240680][   T12] dummy0: left promiscuous mode
[ 1965.240896][   T12] br0: port 1(dummy0) entered disabled state