[ 1539.966927] br0: port 1(dummy0) entered blocking state
[ 1539.966975] br0: port 1(dummy0) entered disabled state
[ 1539.967003] dummy0: entered allmulticast mode
[ 1539.967052] dummy0: entered promiscuous mode
[ 1539.969619] br0: port 1(dummy0) entered blocking state
[ 1539.969654] br0: port 1(dummy0) entered forwarding state
[ 1540.154564] dummy0: left allmulticast mode
[ 1540.154602] dummy0: left promiscuous mode
[ 1540.154682] br0: port 1(dummy0) entered disabled state