[ 1779.746012] br0: port 1(dummy0) entered blocking state
[ 1779.746051] br0: port 1(dummy0) entered disabled state
[ 1779.746083] dummy0: entered allmulticast mode
[ 1779.746136] dummy0: entered promiscuous mode
[ 1779.749341] br0: port 1(dummy0) entered blocking state
[ 1779.749403] br0: port 1(dummy0) entered forwarding state
[ 1779.988559] dummy0: left allmulticast mode
[ 1779.988607] dummy0: left promiscuous mode
[ 1779.988638] br0: port 1(dummy0) entered disabled state