[ 2248.454370][T15394] br0: port 1(dummy0) entered blocking state
[ 2248.454615][T15394] br0: port 1(dummy0) entered disabled state
[ 2248.454841][T15394] dummy0: entered allmulticast mode
[ 2248.460788][T15394] dummy0: entered promiscuous mode
[ 2248.483547][T15395] br0: port 1(dummy0) entered blocking state
[ 2248.483769][T15395] br0: port 1(dummy0) entered forwarding state
[ 2250.505360][   T12] dummy0: left allmulticast mode
[ 2250.505664][   T12] dummy0: left promiscuous mode
[ 2250.505879][   T12] br0: port 1(dummy0) entered disabled state