[ 1752.355095] br0: port 1(dummy0) entered blocking state
[ 1752.355157] br0: port 1(dummy0) entered disabled state
[ 1752.355219] dummy0: entered allmulticast mode
[ 1752.355290] dummy0: entered promiscuous mode
[ 1752.358946] br0: port 1(dummy0) entered blocking state
[ 1752.358967] br0: port 1(dummy0) entered forwarding state
[ 1752.636733] dummy0: left allmulticast mode
[ 1752.636787] dummy0: left promiscuous mode
[ 1752.636868] br0: port 1(dummy0) entered disabled state