[ 2120.796516][T18712] br0: port 1(dummy0) entered blocking state
[ 2120.796853][T18712] br0: port 1(dummy0) entered disabled state
[ 2120.797131][T18712] dummy0: entered allmulticast mode
[ 2120.798778][T18712] dummy0: entered promiscuous mode
[ 2120.827145][T18713] br0: port 1(dummy0) entered blocking state
[ 2120.827532][T18713] br0: port 1(dummy0) entered forwarding state
[ 2123.293646][   T12] dummy0: left allmulticast mode
[ 2123.294535][   T12] dummy0: left promiscuous mode
[ 2123.294952][   T12] br0: port 1(dummy0) entered disabled state