[ 1853.170898] br0: port 1(dummy0) entered blocking state
[ 1853.170944] br0: port 1(dummy0) entered disabled state
[ 1853.170977] dummy0: entered allmulticast mode
[ 1853.171033] dummy0: entered promiscuous mode
[ 1853.174699] br0: port 1(dummy0) entered blocking state
[ 1853.174737] br0: port 1(dummy0) entered forwarding state
[ 1853.430906] dummy0: left allmulticast mode
[ 1853.430946] dummy0: left promiscuous mode
[ 1853.430986] br0: port 1(dummy0) entered disabled state