[ 2087.214912][ T7247] br0: port 1(dummy0) entered blocking state
[ 2087.215170][ T7247] br0: port 1(dummy0) entered disabled state
[ 2087.215797][ T7247] dummy0: entered allmulticast mode
[ 2087.216922][ T7247] dummy0: entered promiscuous mode
[ 2087.251726][ T7248] br0: port 1(dummy0) entered blocking state
[ 2087.252104][ T7248] br0: port 1(dummy0) entered forwarding state
[ 2089.398741][   T12] dummy0: left allmulticast mode
[ 2089.399832][   T12] dummy0: left promiscuous mode
[ 2089.400077][   T12] br0: port 1(dummy0) entered disabled state