[ 1802.497245] br0: port 1(dummy0) entered blocking state
[ 1802.497323] br0: port 1(dummy0) entered disabled state
[ 1802.497401] dummy0: entered allmulticast mode
[ 1802.497496] dummy0: entered promiscuous mode
[ 1802.500426] br0: port 1(dummy0) entered blocking state
[ 1802.500459] br0: port 1(dummy0) entered forwarding state
[ 1802.724001] dummy0: left allmulticast mode
[ 1802.724045] dummy0: left promiscuous mode
[ 1802.724083] br0: port 1(dummy0) entered disabled state