[ 1677.857654] br0: port 1(dummy0) entered blocking state
[ 1677.857693] br0: port 1(dummy0) entered disabled state
[ 1677.857727] dummy0: entered allmulticast mode
[ 1677.857779] dummy0: entered promiscuous mode
[ 1677.860618] br0: port 1(dummy0) entered blocking state
[ 1677.860672] br0: port 1(dummy0) entered forwarding state
[ 1678.048503] dummy0: left allmulticast mode
[ 1678.048540] dummy0: left promiscuous mode
[ 1678.048564] br0: port 1(dummy0) entered disabled state