[ 1901.556095][ T8064] br0: port 1(dummy0) entered blocking state
[ 1901.556283][ T8064] br0: port 1(dummy0) entered disabled state
[ 1901.556448][ T8064] dummy0: entered allmulticast mode
[ 1901.557391][ T8064] dummy0: entered promiscuous mode
[ 1901.586025][ T8065] br0: port 1(dummy0) entered blocking state
[ 1901.586354][ T8065] br0: port 1(dummy0) entered forwarding state
[ 1903.547214][   T12] dummy0: left allmulticast mode
[ 1903.548060][   T12] dummy0: left promiscuous mode
[ 1903.548293][   T12] br0: port 1(dummy0) entered disabled state