[ 2212.666679][ T2177] br0: port 1(dummy0) entered blocking state
[ 2212.666873][ T2177] br0: port 1(dummy0) entered disabled state
[ 2212.667034][ T2177] dummy0: entered allmulticast mode
[ 2212.668405][ T2177] dummy0: entered promiscuous mode
[ 2212.691252][ T2178] br0: port 1(dummy0) entered blocking state
[ 2212.691623][ T2178] br0: port 1(dummy0) entered forwarding state
[ 2214.628307][   T12] dummy0: left allmulticast mode
[ 2214.628968][   T12] dummy0: left promiscuous mode
[ 2214.629209][   T12] br0: port 1(dummy0) entered disabled state