[ 2234.113614][T12590] br0: port 1(dummy0) entered blocking state
[ 2234.114117][T12590] br0: port 1(dummy0) entered disabled state
[ 2234.114603][T12590] dummy0: entered allmulticast mode
[ 2234.116681][T12590] dummy0: entered promiscuous mode
[ 2234.147308][T12591] br0: port 1(dummy0) entered blocking state
[ 2234.147858][T12591] br0: port 1(dummy0) entered forwarding state
[ 2237.535566][   T12] dummy0: left allmulticast mode
[ 2237.536954][   T12] dummy0: left promiscuous mode
[ 2237.537408][   T12] br0: port 1(dummy0) entered disabled state