[ 1821.694048] br0: port 1(dummy0) entered blocking state
[ 1821.694122] br0: port 1(dummy0) entered disabled state
[ 1821.694194] dummy0: entered allmulticast mode
[ 1821.694283] dummy0: entered promiscuous mode
[ 1821.697744] br0: port 1(dummy0) entered blocking state
[ 1821.697779] br0: port 1(dummy0) entered forwarding state
[ 1821.949145] dummy0: left allmulticast mode
[ 1821.949215] dummy0: left promiscuous mode
[ 1821.949287] br0: port 1(dummy0) entered disabled state