[ 1837.794802] br0: port 1(dummy0) entered blocking state
[ 1837.794845] br0: port 1(dummy0) entered disabled state
[ 1837.794879] dummy0: entered allmulticast mode
[ 1837.794931] dummy0: entered promiscuous mode
[ 1837.798118] br0: port 1(dummy0) entered blocking state
[ 1837.798184] br0: port 1(dummy0) entered forwarding state
[ 1838.044108] dummy0: left allmulticast mode
[ 1838.044150] dummy0: left promiscuous mode
[ 1838.044179] br0: port 1(dummy0) entered disabled state