[ 1879.425489][T19543] br0: port 1(dummy0) entered blocking state
[ 1879.425677][T19543] br0: port 1(dummy0) entered disabled state
[ 1879.425842][T19543] dummy0: entered allmulticast mode
[ 1879.426711][T19543] dummy0: entered promiscuous mode
[ 1879.457098][T19544] br0: port 1(dummy0) entered blocking state
[ 1879.457643][T19544] br0: port 1(dummy0) entered forwarding state
[ 1881.436819][   T12] dummy0: left allmulticast mode
[ 1881.438856][   T12] dummy0: left promiscuous mode
[ 1881.439194][   T12] br0: port 1(dummy0) entered disabled state