[ 1911.345013][T18119] br0: port 1(dummy0) entered blocking state
[ 1911.345202][T18119] br0: port 1(dummy0) entered disabled state
[ 1911.345363][T18119] dummy0: entered allmulticast mode
[ 1911.347043][T18119] dummy0: entered promiscuous mode
[ 1911.373568][T18120] br0: port 1(dummy0) entered blocking state
[ 1911.373855][T18120] br0: port 1(dummy0) entered forwarding state
[ 1913.262239][   T12] dummy0: left allmulticast mode
[ 1913.263210][   T12] dummy0: left promiscuous mode
[ 1913.263447][   T12] br0: port 1(dummy0) entered disabled state