[ 1839.792914][ T1174] br0: port 1(dummy0) entered blocking state
[ 1839.793111][ T1174] br0: port 1(dummy0) entered disabled state
[ 1839.793283][ T1174] dummy0: entered allmulticast mode
[ 1839.794137][ T1174] dummy0: entered promiscuous mode
[ 1839.818868][ T1175] br0: port 1(dummy0) entered blocking state
[ 1839.819217][ T1175] br0: port 1(dummy0) entered forwarding state
[ 1841.791545][   T12] dummy0: left allmulticast mode
[ 1841.792289][   T12] dummy0: left promiscuous mode
[ 1841.792525][   T12] br0: port 1(dummy0) entered disabled state