[ 2174.157311][T23521] br0: port 1(dummy0) entered blocking state
[ 2174.157496][T23521] br0: port 1(dummy0) entered disabled state
[ 2174.157661][T23521] dummy0: entered allmulticast mode
[ 2174.159069][T23521] dummy0: entered promiscuous mode
[ 2174.187811][T23522] br0: port 1(dummy0) entered blocking state
[ 2174.188150][T23522] br0: port 1(dummy0) entered forwarding state
[ 2176.063444][   T12] dummy0: left allmulticast mode
[ 2176.064498][   T12] dummy0: left promiscuous mode
[ 2176.064756][   T12] br0: port 1(dummy0) entered disabled state