[ 1804.770950] br0: port 1(dummy0) entered blocking state
[ 1804.770996] br0: port 1(dummy0) entered disabled state
[ 1804.771027] dummy0: entered allmulticast mode
[ 1804.771077] dummy0: entered promiscuous mode
[ 1804.774654] br0: port 1(dummy0) entered blocking state
[ 1804.774689] br0: port 1(dummy0) entered forwarding state
[ 1805.044338] dummy0: left allmulticast mode
[ 1805.044367] dummy0: left promiscuous mode
[ 1805.044396] br0: port 1(dummy0) entered disabled state