[ 1932.194766] br0: port 1(dummy0) entered blocking state
[ 1932.194801] br0: port 1(dummy0) entered disabled state
[ 1932.194823] dummy0: entered allmulticast mode
[ 1932.194860] dummy0: entered promiscuous mode
[ 1932.198547] br0: port 1(dummy0) entered blocking state
[ 1932.198597] br0: port 1(dummy0) entered forwarding state
[ 1932.474801] dummy0: left allmulticast mode
[ 1932.474845] dummy0: left promiscuous mode
[ 1932.474943] br0: port 1(dummy0) entered disabled state