[ 1722.214465] br0: port 1(dummy0) entered blocking state
[ 1722.214513] br0: port 1(dummy0) entered disabled state
[ 1722.214547] dummy0: entered allmulticast mode
[ 1722.214600] dummy0: entered promiscuous mode
[ 1722.217374] br0: port 1(dummy0) entered blocking state
[ 1722.217404] br0: port 1(dummy0) entered forwarding state
[ 1722.406032] dummy0: left allmulticast mode
[ 1722.406069] dummy0: left promiscuous mode
[ 1722.406125] br0: port 1(dummy0) entered disabled state