[ 1722.152088] br0: port 1(dummy0) entered blocking state
[ 1722.152132] br0: port 1(dummy0) entered disabled state
[ 1722.152156] dummy0: entered allmulticast mode
[ 1722.152202] dummy0: entered promiscuous mode
[ 1722.156048] br0: port 1(dummy0) entered blocking state
[ 1722.156070] br0: port 1(dummy0) entered forwarding state
[ 1722.461035] dummy0: left allmulticast mode
[ 1722.461073] dummy0: left promiscuous mode
[ 1722.461096] br0: port 1(dummy0) entered disabled state