[ 1981.003324][T12288] br0: port 1(dummy0) entered blocking state
[ 1981.003508][T12288] br0: port 1(dummy0) entered disabled state
[ 1981.003674][T12288] dummy0: entered allmulticast mode
[ 1981.005152][T12288] dummy0: entered promiscuous mode
[ 1981.035908][T12289] br0: port 1(dummy0) entered blocking state
[ 1981.036158][T12289] br0: port 1(dummy0) entered forwarding state
[ 1982.972437][   T12] dummy0: left allmulticast mode
[ 1982.972736][   T12] dummy0: left promiscuous mode
[ 1982.973353][   T12] br0: port 1(dummy0) entered disabled state