[ 1777.213615] br0: port 1(dummy0) entered blocking state
[ 1777.213684] br0: port 1(dummy0) entered disabled state
[ 1777.213759] dummy0: entered allmulticast mode
[ 1777.213825] dummy0: entered promiscuous mode
[ 1777.217180] br0: port 1(dummy0) entered blocking state
[ 1777.217209] br0: port 1(dummy0) entered forwarding state
[ 1777.479534] dummy0: left allmulticast mode
[ 1777.479563] dummy0: left promiscuous mode
[ 1777.479586] br0: port 1(dummy0) entered disabled state