[ 1822.004092] br0: port 1(dummy0) entered blocking state
[ 1822.004135] br0: port 1(dummy0) entered disabled state
[ 1822.004171] dummy0: entered allmulticast mode
[ 1822.004221] dummy0: entered promiscuous mode
[ 1822.007506] br0: port 1(dummy0) entered blocking state
[ 1822.007571] br0: port 1(dummy0) entered forwarding state
[ 1822.230162] dummy0: left allmulticast mode
[ 1822.230198] dummy0: left promiscuous mode
[ 1822.230231] br0: port 1(dummy0) entered disabled state