[ 1839.163739] br0: port 1(dummy0) entered blocking state
[ 1839.163771] br0: port 1(dummy0) entered disabled state
[ 1839.163811] dummy0: entered allmulticast mode
[ 1839.163858] dummy0: entered promiscuous mode
[ 1839.167263] br0: port 1(dummy0) entered blocking state
[ 1839.167331] br0: port 1(dummy0) entered forwarding state
[ 1839.383354] dummy0: left allmulticast mode
[ 1839.383385] dummy0: left promiscuous mode
[ 1839.383415] br0: port 1(dummy0) entered disabled state