[ 2239.825744][T21614] br0: port 1(dummy0) entered blocking state
[ 2239.826099][T21614] br0: port 1(dummy0) entered disabled state
[ 2239.826426][T21614] dummy0: entered allmulticast mode
[ 2239.827628][T21614] dummy0: entered promiscuous mode
[ 2239.853265][T21615] br0: port 1(dummy0) entered blocking state
[ 2239.853877][T21615] br0: port 1(dummy0) entered forwarding state
[ 2242.308283][   T71] dummy0: left allmulticast mode
[ 2242.309287][   T71] dummy0: left promiscuous mode
[ 2242.309742][   T71] br0: port 1(dummy0) entered disabled state