[ 1914.881264] br0: port 1(dummy0) entered blocking state
[ 1914.881343] br0: port 1(dummy0) entered disabled state
[ 1914.881413] dummy0: entered allmulticast mode
[ 1914.881498] dummy0: entered promiscuous mode
[ 1914.885017] br0: port 1(dummy0) entered blocking state
[ 1914.885048] br0: port 1(dummy0) entered forwarding state
[ 1915.150769] dummy0: left allmulticast mode
[ 1915.150846] dummy0: left promiscuous mode
[ 1915.150932] br0: port 1(dummy0) entered disabled state