[ 1676.441302] br0: port 1(dummy0) entered blocking state
[ 1676.441377] br0: port 1(dummy0) entered disabled state
[ 1676.441440] dummy0: entered allmulticast mode
[ 1676.441530] dummy0: entered promiscuous mode
[ 1676.444049] br0: port 1(dummy0) entered blocking state
[ 1676.444084] br0: port 1(dummy0) entered forwarding state
[ 1676.637250] dummy0: left allmulticast mode
[ 1676.637290] dummy0: left promiscuous mode
[ 1676.637316] br0: port 1(dummy0) entered disabled state