[ 1639.761452] br0: port 1(dummy0) entered blocking state
[ 1639.761498] br0: port 1(dummy0) entered disabled state
[ 1639.761540] dummy0: entered allmulticast mode
[ 1639.761597] dummy0: entered promiscuous mode
[ 1639.764338] br0: port 1(dummy0) entered blocking state
[ 1639.764378] br0: port 1(dummy0) entered forwarding state
[ 1639.966899] dummy0: left allmulticast mode
[ 1639.966970] dummy0: left promiscuous mode
[ 1639.967036] br0: port 1(dummy0) entered disabled state