[ 2186.523880][T20769] br0: port 1(dummy0) entered blocking state
[ 2186.524155][T20769] br0: port 1(dummy0) entered disabled state
[ 2186.524792][T20769] dummy0: entered allmulticast mode
[ 2186.526348][T20769] dummy0: entered promiscuous mode
[ 2186.572705][T20770] br0: port 1(dummy0) entered blocking state
[ 2186.573005][T20770] br0: port 1(dummy0) entered forwarding state
[ 2188.961378][   T12] dummy0: left allmulticast mode
[ 2188.961901][   T12] dummy0: left promiscuous mode
[ 2188.962126][   T12] br0: port 1(dummy0) entered disabled state