[ 1850.759517] br0: port 1(dummy0) entered blocking state
[ 1850.759573] br0: port 1(dummy0) entered disabled state
[ 1850.759609] dummy0: entered allmulticast mode
[ 1850.759674] dummy0: entered promiscuous mode
[ 1850.763371] br0: port 1(dummy0) entered blocking state
[ 1850.763440] br0: port 1(dummy0) entered forwarding state
[ 1851.051710] dummy0: left allmulticast mode
[ 1851.051768] dummy0: left promiscuous mode
[ 1851.051841] br0: port 1(dummy0) entered disabled state