[ 2237.197502][T29114] br0: port 1(dummy0) entered blocking state
[ 2237.197825][T29114] br0: port 1(dummy0) entered disabled state
[ 2237.198105][T29114] dummy0: entered allmulticast mode
[ 2237.199094][T29114] dummy0: entered promiscuous mode
[ 2237.227025][T29115] br0: port 1(dummy0) entered blocking state
[ 2237.227339][T29115] br0: port 1(dummy0) entered forwarding state
[ 2239.741905][   T12] dummy0: left allmulticast mode
[ 2239.742991][   T12] dummy0: left promiscuous mode
[ 2239.743344][   T12] br0: port 1(dummy0) entered disabled state