[ 1867.475799] br0: port 1(dummy0) entered blocking state
[ 1867.475832] br0: port 1(dummy0) entered disabled state
[ 1867.475853] dummy0: entered allmulticast mode
[ 1867.475898] dummy0: entered promiscuous mode
[ 1867.479610] br0: port 1(dummy0) entered blocking state
[ 1867.479635] br0: port 1(dummy0) entered forwarding state
[ 1867.740209] dummy0: left allmulticast mode
[ 1867.740236] dummy0: left promiscuous mode
[ 1867.740258] br0: port 1(dummy0) entered disabled state