[ 1747.146483] br0: port 1(dummy0) entered blocking state
[ 1747.146519] br0: port 1(dummy0) entered disabled state
[ 1747.146563] dummy0: entered allmulticast mode
[ 1747.146614] dummy0: entered promiscuous mode
[ 1747.150030] br0: port 1(dummy0) entered blocking state
[ 1747.150060] br0: port 1(dummy0) entered forwarding state
[ 1747.365092] dummy0: left allmulticast mode
[ 1747.365125] dummy0: left promiscuous mode
[ 1747.365157] br0: port 1(dummy0) entered disabled state