[ 2253.128162][T18697] br0: port 1(dummy0) entered blocking state
[ 2253.128534][T18697] br0: port 1(dummy0) entered disabled state
[ 2253.128901][T18697] dummy0: entered allmulticast mode
[ 2253.130133][T18697] dummy0: entered promiscuous mode
[ 2253.158640][T18698] br0: port 1(dummy0) entered blocking state
[ 2253.159040][T18698] br0: port 1(dummy0) entered forwarding state
[ 2255.788318][   T12] dummy0: left allmulticast mode
[ 2255.789254][   T12] dummy0: left promiscuous mode
[ 2255.789852][   T12] br0: port 1(dummy0) entered disabled state