[ 1838.853769] br0: port 1(dummy0) entered blocking state
[ 1838.853823] br0: port 1(dummy0) entered disabled state
[ 1838.853858] dummy0: entered allmulticast mode
[ 1838.853910] dummy0: entered promiscuous mode
[ 1838.856743] br0: port 1(dummy0) entered blocking state
[ 1838.856806] br0: port 1(dummy0) entered forwarding state
[ 1839.060318] dummy0: left allmulticast mode
[ 1839.060364] dummy0: left promiscuous mode
[ 1839.060403] br0: port 1(dummy0) entered disabled state