[ 2191.470825][ T9288] br0: port 1(dummy0) entered blocking state
[ 2191.471313][ T9288] br0: port 1(dummy0) entered disabled state
[ 2191.471540][ T9288] dummy0: entered allmulticast mode
[ 2191.472525][ T9288] dummy0: entered promiscuous mode
[ 2191.498820][ T9289] br0: port 1(dummy0) entered blocking state
[ 2191.499046][ T9289] br0: port 1(dummy0) entered forwarding state
[ 2193.453204][   T12] dummy0: left allmulticast mode
[ 2193.453368][   T12] dummy0: left promiscuous mode
[ 2193.453590][   T12] br0: port 1(dummy0) entered disabled state