[ 1636.135992] br0: port 1(dummy0) entered blocking state
[ 1636.136042] br0: port 1(dummy0) entered disabled state
[ 1636.136079] dummy0: entered allmulticast mode
[ 1636.136136] dummy0: entered promiscuous mode
[ 1636.138968] br0: port 1(dummy0) entered blocking state
[ 1636.138997] br0: port 1(dummy0) entered forwarding state
[ 1636.338737] dummy0: left allmulticast mode
[ 1636.338767] dummy0: left promiscuous mode
[ 1636.338795] br0: port 1(dummy0) entered disabled state