[ 1590.454380] br0: port 1(dummy0) entered blocking state
[ 1590.454429] br0: port 1(dummy0) entered disabled state
[ 1590.454465] dummy0: entered allmulticast mode
[ 1590.454518] dummy0: entered promiscuous mode
[ 1590.457105] br0: port 1(dummy0) entered blocking state
[ 1590.457167] br0: port 1(dummy0) entered forwarding state
[ 1590.639486] dummy0: left allmulticast mode
[ 1590.639523] dummy0: left promiscuous mode
[ 1590.639554] br0: port 1(dummy0) entered disabled state