[ 1779.408479] br0: port 1(dummy0) entered blocking state
[ 1779.408523] br0: port 1(dummy0) entered disabled state
[ 1779.408557] dummy0: entered allmulticast mode
[ 1779.408612] dummy0: entered promiscuous mode
[ 1779.412230] br0: port 1(dummy0) entered blocking state
[ 1779.412295] br0: port 1(dummy0) entered forwarding state
[ 1779.666468] dummy0: left allmulticast mode
[ 1779.666499] dummy0: left promiscuous mode
[ 1779.666529] br0: port 1(dummy0) entered disabled state