[ 2253.631122][T23577] br0: port 1(dummy0) entered blocking state
[ 2253.631316][T23577] br0: port 1(dummy0) entered disabled state
[ 2253.631484][T23577] dummy0: entered allmulticast mode
[ 2253.632432][T23577] dummy0: entered promiscuous mode
[ 2253.662071][T23578] br0: port 1(dummy0) entered blocking state
[ 2253.662346][T23578] br0: port 1(dummy0) entered forwarding state
[ 2255.641826][   T12] dummy0: left allmulticast mode
[ 2255.642770][   T12] dummy0: left promiscuous mode
[ 2255.643215][   T12] br0: port 1(dummy0) entered disabled state