[ 2161.335017][ T9483] br0: port 1(dummy0) entered blocking state
[ 2161.335282][ T9483] br0: port 1(dummy0) entered disabled state
[ 2161.335535][ T9483] dummy0: entered allmulticast mode
[ 2161.337859][ T9483] dummy0: entered promiscuous mode
[ 2161.372309][ T9484] br0: port 1(dummy0) entered blocking state
[ 2161.372487][ T9484] br0: port 1(dummy0) entered forwarding state
[ 2164.168624][   T12] dummy0: left allmulticast mode
[ 2164.169729][   T12] dummy0: left promiscuous mode
[ 2164.170354][   T12] br0: port 1(dummy0) entered disabled state