[ 2332.055364][T17984] br0: port 1(dummy0) entered blocking state
[ 2332.055557][T17984] br0: port 1(dummy0) entered disabled state
[ 2332.055720][T17984] dummy0: entered allmulticast mode
[ 2332.056742][T17984] dummy0: entered promiscuous mode
[ 2332.080866][T17985] br0: port 1(dummy0) entered blocking state
[ 2332.081178][T17985] br0: port 1(dummy0) entered forwarding state
[ 2334.304184][   T70] dummy0: left allmulticast mode
[ 2334.305056][   T70] dummy0: left promiscuous mode
[ 2334.305348][   T70] br0: port 1(dummy0) entered disabled state