[ 1871.049560] br0: port 1(dummy0) entered blocking state
[ 1871.049591] br0: port 1(dummy0) entered disabled state
[ 1871.049613] dummy0: entered allmulticast mode
[ 1871.049649] dummy0: entered promiscuous mode
[ 1871.053059] br0: port 1(dummy0) entered blocking state
[ 1871.053117] br0: port 1(dummy0) entered forwarding state
[ 1871.317149] dummy0: left allmulticast mode
[ 1871.317173] dummy0: left promiscuous mode
[ 1871.317191] br0: port 1(dummy0) entered disabled state