[ 1549.076292] br0: port 1(dummy0) entered blocking state
[ 1549.076332] br0: port 1(dummy0) entered disabled state
[ 1549.076364] dummy0: entered allmulticast mode
[ 1549.076418] dummy0: entered promiscuous mode
[ 1549.079453] br0: port 1(dummy0) entered blocking state
[ 1549.079516] br0: port 1(dummy0) entered forwarding state
[ 1549.283126] dummy0: left allmulticast mode
[ 1549.283158] dummy0: left promiscuous mode
[ 1549.283191] br0: port 1(dummy0) entered disabled state