[ 1562.031304] br0: port 1(dummy0) entered blocking state
[ 1562.031382] br0: port 1(dummy0) entered disabled state
[ 1562.031457] dummy0: entered allmulticast mode
[ 1562.031542] dummy0: entered promiscuous mode
[ 1562.034175] br0: port 1(dummy0) entered blocking state
[ 1562.034207] br0: port 1(dummy0) entered forwarding state
[ 1562.209773] dummy0: left allmulticast mode
[ 1562.209839] dummy0: left promiscuous mode
[ 1562.209914] br0: port 1(dummy0) entered disabled state