[ 1834.356499][T21270] br0: port 1(dummy0) entered blocking state
[ 1834.356682][T21270] br0: port 1(dummy0) entered disabled state
[ 1834.356839][T21270] dummy0: entered allmulticast mode
[ 1834.357396][T21270] dummy0: entered promiscuous mode
[ 1834.376296][T21271] br0: port 1(dummy0) entered blocking state
[ 1834.376444][T21271] br0: port 1(dummy0) entered forwarding state
[ 1835.575349][   T69] dummy0: left allmulticast mode
[ 1835.577173][   T69] dummy0: left promiscuous mode
[ 1835.577376][   T69] br0: port 1(dummy0) entered disabled state