[ 1655.073474] br0: port 1(dummy0) entered blocking state
[ 1655.073548] br0: port 1(dummy0) entered disabled state
[ 1655.073614] dummy0: entered allmulticast mode
[ 1655.073720] dummy0: entered promiscuous mode
[ 1655.076323] br0: port 1(dummy0) entered blocking state
[ 1655.076385] br0: port 1(dummy0) entered forwarding state
[ 1655.251847] dummy0: left allmulticast mode
[ 1655.251879] dummy0: left promiscuous mode
[ 1655.251933] br0: port 1(dummy0) entered disabled state