[ 1743.264446] br0: port 1(dummy0) entered blocking state
[ 1743.264526] br0: port 1(dummy0) entered disabled state
[ 1743.264593] dummy0: entered allmulticast mode
[ 1743.264680] dummy0: entered promiscuous mode
[ 1743.268282] br0: port 1(dummy0) entered blocking state
[ 1743.268315] br0: port 1(dummy0) entered forwarding state
[ 1743.540417] dummy0: left allmulticast mode
[ 1743.540453] dummy0: left promiscuous mode
[ 1743.540487] br0: port 1(dummy0) entered disabled state