[ 1741.441788] br0: port 1(dummy0) entered blocking state
[ 1741.441827] br0: port 1(dummy0) entered disabled state
[ 1741.441863] dummy0: entered allmulticast mode
[ 1741.441914] dummy0: entered promiscuous mode
[ 1741.445258] br0: port 1(dummy0) entered blocking state
[ 1741.445321] br0: port 1(dummy0) entered forwarding state
[ 1741.702453] dummy0: left allmulticast mode
[ 1741.702490] dummy0: left promiscuous mode
[ 1741.702523] br0: port 1(dummy0) entered disabled state