[ 1819.170262] br0: port 1(dummy0) entered blocking state
[ 1819.170336] br0: port 1(dummy0) entered disabled state
[ 1819.170405] dummy0: entered allmulticast mode
[ 1819.170485] dummy0: entered promiscuous mode
[ 1819.173844] br0: port 1(dummy0) entered blocking state
[ 1819.173877] br0: port 1(dummy0) entered forwarding state
[ 1819.416589] dummy0: left allmulticast mode
[ 1819.416653] dummy0: left promiscuous mode
[ 1819.416745] br0: port 1(dummy0) entered disabled state