[ 1853.161952][T15302] br0: port 1(dummy0) entered blocking state
[ 1853.162156][T15302] br0: port 1(dummy0) entered disabled state
[ 1853.162315][T15302] dummy0: entered allmulticast mode
[ 1853.163699][T15302] dummy0: entered promiscuous mode
[ 1853.186447][T15303] br0: port 1(dummy0) entered blocking state
[ 1853.186723][T15303] br0: port 1(dummy0) entered forwarding state
[ 1855.175908][   T12] dummy0: left allmulticast mode
[ 1855.176952][   T12] dummy0: left promiscuous mode
[ 1855.177264][   T12] br0: port 1(dummy0) entered disabled state