[ 1753.586051] br0: port 1(dummy0) entered blocking state
[ 1753.586102] br0: port 1(dummy0) entered disabled state
[ 1753.586148] dummy0: entered allmulticast mode
[ 1753.586199] dummy0: entered promiscuous mode
[ 1753.589797] br0: port 1(dummy0) entered blocking state
[ 1753.589863] br0: port 1(dummy0) entered forwarding state
[ 1753.860193] dummy0: left allmulticast mode
[ 1753.860234] dummy0: left promiscuous mode
[ 1753.860298] br0: port 1(dummy0) entered disabled state