[ 2216.017581][T19743] br0: port 1(dummy0) entered blocking state
[ 2216.017769][T19743] br0: port 1(dummy0) entered disabled state
[ 2216.017931][T19743] dummy0: entered allmulticast mode
[ 2216.018897][T19743] dummy0: entered promiscuous mode
[ 2216.055640][T19744] br0: port 1(dummy0) entered blocking state
[ 2216.055915][T19744] br0: port 1(dummy0) entered forwarding state
[ 2218.334842][   T12] dummy0: left allmulticast mode
[ 2218.335787][   T12] dummy0: left promiscuous mode
[ 2218.336023][   T12] br0: port 1(dummy0) entered disabled state