[ 1830.565485][T21398] br0: port 1(dummy0) entered blocking state
[ 1830.565685][T21398] br0: port 1(dummy0) entered disabled state
[ 1830.566217][T21398] dummy0: entered allmulticast mode
[ 1830.567246][T21398] dummy0: entered promiscuous mode
[ 1830.595396][T21399] br0: port 1(dummy0) entered blocking state
[ 1830.595718][T21399] br0: port 1(dummy0) entered forwarding state
[ 1832.427878][   T12] dummy0: left allmulticast mode
[ 1832.428190][   T12] dummy0: left promiscuous mode
[ 1832.428404][   T12] br0: port 1(dummy0) entered disabled state