[ 2148.505311][ T1952] br0: port 1(dummy0) entered blocking state
[ 2148.505496][ T1952] br0: port 1(dummy0) entered disabled state
[ 2148.505651][ T1952] dummy0: entered allmulticast mode
[ 2148.506888][ T1952] dummy0: entered promiscuous mode
[ 2148.538508][ T1953] br0: port 1(dummy0) entered blocking state
[ 2148.538918][ T1953] br0: port 1(dummy0) entered forwarding state
[ 2150.565907][   T69] dummy0: left allmulticast mode
[ 2150.566589][   T69] dummy0: left promiscuous mode
[ 2150.566825][   T69] br0: port 1(dummy0) entered disabled state