[ 1898.050183][ T9077] br0: port 1(dummy0) entered blocking state
[ 1898.050391][ T9077] br0: port 1(dummy0) entered disabled state
[ 1898.050566][ T9077] dummy0: entered allmulticast mode
[ 1898.051621][ T9077] dummy0: entered promiscuous mode
[ 1898.076476][ T9078] br0: port 1(dummy0) entered blocking state
[ 1898.076665][ T9078] br0: port 1(dummy0) entered forwarding state
[ 1899.955584][   T12] dummy0: left allmulticast mode
[ 1899.955754][   T12] dummy0: left promiscuous mode
[ 1899.955973][   T12] br0: port 1(dummy0) entered disabled state