[ 1741.555072] br0: port 1(dummy0) entered blocking state
[ 1741.555134] br0: port 1(dummy0) entered disabled state
[ 1741.555186] dummy0: entered allmulticast mode
[ 1741.555252] dummy0: entered promiscuous mode
[ 1741.559175] br0: port 1(dummy0) entered blocking state
[ 1741.559260] br0: port 1(dummy0) entered forwarding state
[ 1741.829931] dummy0: left allmulticast mode
[ 1741.829969] dummy0: left promiscuous mode
[ 1741.830036] br0: port 1(dummy0) entered disabled state