[ 1853.958889][ T8246] br0: port 1(dummy0) entered blocking state
[ 1853.959107][ T8246] br0: port 1(dummy0) entered disabled state
[ 1853.959278][ T8246] dummy0: entered allmulticast mode
[ 1853.960175][ T8246] dummy0: entered promiscuous mode
[ 1853.980827][ T8247] br0: port 1(dummy0) entered blocking state
[ 1853.981147][ T8247] br0: port 1(dummy0) entered forwarding state
[ 1855.845790][   T72] dummy0: left allmulticast mode
[ 1855.845955][   T72] dummy0: left promiscuous mode
[ 1855.846178][   T72] br0: port 1(dummy0) entered disabled state