[ 1663.128982] br0: port 1(dummy0) entered blocking state
[ 1663.129033] br0: port 1(dummy0) entered disabled state
[ 1663.129067] dummy0: entered allmulticast mode
[ 1663.129125] dummy0: entered promiscuous mode
[ 1663.131654] br0: port 1(dummy0) entered blocking state
[ 1663.131690] br0: port 1(dummy0) entered forwarding state
[ 1663.305153] dummy0: left allmulticast mode
[ 1663.305196] dummy0: left promiscuous mode
[ 1663.305227] br0: port 1(dummy0) entered disabled state