[ 2127.710428][ T5502] br0: port 1(dummy0) entered blocking state
[ 2127.710750][ T5502] br0: port 1(dummy0) entered disabled state
[ 2127.711055][ T5502] dummy0: entered allmulticast mode
[ 2127.712174][ T5502] dummy0: entered promiscuous mode
[ 2127.745340][ T5503] br0: port 1(dummy0) entered blocking state
[ 2127.746032][ T5503] br0: port 1(dummy0) entered forwarding state
[ 2130.178557][   T72] dummy0: left allmulticast mode
[ 2130.179407][   T72] dummy0: left promiscuous mode
[ 2130.179783][   T72] br0: port 1(dummy0) entered disabled state