[ 1775.471544] br0: port 1(dummy0) entered blocking state
[ 1775.471624] br0: port 1(dummy0) entered disabled state
[ 1775.471701] dummy0: entered allmulticast mode
[ 1775.471784] dummy0: entered promiscuous mode
[ 1775.474647] br0: port 1(dummy0) entered blocking state
[ 1775.474687] br0: port 1(dummy0) entered forwarding state
[ 1775.667743] dummy0: left allmulticast mode
[ 1775.667803] dummy0: left promiscuous mode
[ 1775.667863] br0: port 1(dummy0) entered disabled state