[ 1795.252597] br0: port 1(dummy0) entered blocking state
[ 1795.252634] br0: port 1(dummy0) entered disabled state
[ 1795.252674] dummy0: entered allmulticast mode
[ 1795.252724] dummy0: entered promiscuous mode
[ 1795.256306] br0: port 1(dummy0) entered blocking state
[ 1795.256344] br0: port 1(dummy0) entered forwarding state
[ 1795.507813] dummy0: left allmulticast mode
[ 1795.507880] dummy0: left promiscuous mode
[ 1795.507957] br0: port 1(dummy0) entered disabled state