[ 1737.227067] br0: port 1(dummy0) entered blocking state
[ 1737.227100] br0: port 1(dummy0) entered disabled state
[ 1737.227120] dummy0: entered allmulticast mode
[ 1737.227159] dummy0: entered promiscuous mode
[ 1737.230627] br0: port 1(dummy0) entered blocking state
[ 1737.230648] br0: port 1(dummy0) entered forwarding state
[ 1737.449068] dummy0: left allmulticast mode
[ 1737.449092] dummy0: left promiscuous mode
[ 1737.449112] br0: port 1(dummy0) entered disabled state