[ 2301.720157][T13264] br0: port 1(dummy0) entered blocking state
[ 2301.720458][T13264] br0: port 1(dummy0) entered disabled state
[ 2301.720729][T13264] dummy0: entered allmulticast mode
[ 2301.721715][T13264] dummy0: entered promiscuous mode
[ 2301.754627][T13265] br0: port 1(dummy0) entered blocking state
[ 2301.754961][T13265] br0: port 1(dummy0) entered forwarding state
[ 2304.113068][   T12] dummy0: left allmulticast mode
[ 2304.113380][   T12] dummy0: left promiscuous mode
[ 2304.113743][   T12] br0: port 1(dummy0) entered disabled state