[ 1622.349579] br0: port 1(dummy0) entered blocking state
[ 1622.349618] br0: port 1(dummy0) entered disabled state
[ 1622.349655] dummy0: entered allmulticast mode
[ 1622.349704] dummy0: entered promiscuous mode
[ 1622.352531] br0: port 1(dummy0) entered blocking state
[ 1622.352569] br0: port 1(dummy0) entered forwarding state
[ 1622.544242] dummy0: left allmulticast mode
[ 1622.544321] dummy0: left promiscuous mode
[ 1622.544387] br0: port 1(dummy0) entered disabled state