[ 2148.255510][ T9986] br0: port 1(dummy0) entered blocking state
[ 2148.255719][ T9986] br0: port 1(dummy0) entered disabled state
[ 2148.255892][ T9986] dummy0: entered allmulticast mode
[ 2148.256814][ T9986] dummy0: entered promiscuous mode
[ 2148.277221][ T9987] br0: port 1(dummy0) entered blocking state
[ 2148.277521][ T9987] br0: port 1(dummy0) entered forwarding state
[ 2150.300142][   T70] dummy0: left allmulticast mode
[ 2150.300438][   T70] dummy0: left promiscuous mode
[ 2150.300688][   T70] br0: port 1(dummy0) entered disabled state