[ 1614.170987] br0: port 1(dummy0) entered blocking state
[ 1614.171025] br0: port 1(dummy0) entered disabled state
[ 1614.171050] dummy0: entered allmulticast mode
[ 1614.171096] dummy0: entered promiscuous mode
[ 1614.173387] br0: port 1(dummy0) entered blocking state
[ 1614.173416] br0: port 1(dummy0) entered forwarding state
[ 1614.342381] dummy0: left allmulticast mode
[ 1614.342407] dummy0: left promiscuous mode
[ 1614.342432] br0: port 1(dummy0) entered disabled state