[ 2148.814410][T12757] br0: port 1(dummy0) entered blocking state
[ 2148.814595][T12757] br0: port 1(dummy0) entered disabled state
[ 2148.814754][T12757] dummy0: entered allmulticast mode
[ 2148.815813][T12757] dummy0: entered promiscuous mode
[ 2148.844358][T12758] br0: port 1(dummy0) entered blocking state
[ 2148.844536][T12758] br0: port 1(dummy0) entered forwarding state
[ 2151.201578][   T68] dummy0: left allmulticast mode
[ 2151.201772][   T68] dummy0: left promiscuous mode
[ 2151.202010][   T68] br0: port 1(dummy0) entered disabled state