[ 1737.882474] br0: port 1(dummy0) entered blocking state
[ 1737.882515] br0: port 1(dummy0) entered disabled state
[ 1737.882550] dummy0: entered allmulticast mode
[ 1737.882610] dummy0: entered promiscuous mode
[ 1737.885334] br0: port 1(dummy0) entered blocking state
[ 1737.885365] br0: port 1(dummy0) entered forwarding state
[ 1738.071653] dummy0: left allmulticast mode
[ 1738.071691] dummy0: left promiscuous mode
[ 1738.071721] br0: port 1(dummy0) entered disabled state