[ 1811.080116] br0: port 1(dummy0) entered blocking state
[ 1811.080164] br0: port 1(dummy0) entered disabled state
[ 1811.080210] dummy0: entered allmulticast mode
[ 1811.080272] dummy0: entered promiscuous mode
[ 1811.084156] br0: port 1(dummy0) entered blocking state
[ 1811.084196] br0: port 1(dummy0) entered forwarding state
[ 1811.378532] dummy0: left allmulticast mode
[ 1811.378627] dummy0: left promiscuous mode
[ 1811.378701] br0: port 1(dummy0) entered disabled state