[ 2199.929162][ T7047] br0: port 1(dummy0) entered blocking state
[ 2199.929383][ T7047] br0: port 1(dummy0) entered disabled state
[ 2199.929607][ T7047] dummy0: entered allmulticast mode
[ 2199.930563][ T7047] dummy0: entered promiscuous mode
[ 2199.956649][ T7048] br0: port 1(dummy0) entered blocking state
[ 2199.956823][ T7048] br0: port 1(dummy0) entered forwarding state
[ 2202.275992][   T12] dummy0: left allmulticast mode
[ 2202.276163][   T12] dummy0: left promiscuous mode
[ 2202.276373][   T12] br0: port 1(dummy0) entered disabled state