[ 1837.817178] br0: port 1(dummy0) entered blocking state
[ 1837.817247] br0: port 1(dummy0) entered disabled state
[ 1837.817321] dummy0: entered allmulticast mode
[ 1837.817441] dummy0: entered promiscuous mode
[ 1837.821231] br0: port 1(dummy0) entered blocking state
[ 1837.821258] br0: port 1(dummy0) entered forwarding state
[ 1838.109468] dummy0: left allmulticast mode
[ 1838.109499] dummy0: left promiscuous mode
[ 1838.109520] br0: port 1(dummy0) entered disabled state