[ 1570.269055] br0: port 1(dummy0) entered blocking state
[ 1570.269098] br0: port 1(dummy0) entered disabled state
[ 1570.269129] dummy0: entered allmulticast mode
[ 1570.269185] dummy0: entered promiscuous mode
[ 1570.271650] br0: port 1(dummy0) entered blocking state
[ 1570.271685] br0: port 1(dummy0) entered forwarding state
[ 1570.464393] dummy0: left allmulticast mode
[ 1570.464428] dummy0: left promiscuous mode
[ 1570.464532] br0: port 1(dummy0) entered disabled state