[ 1851.293476][T15155] br0: port 1(dummy0) entered blocking state
[ 1851.293709][T15155] br0: port 1(dummy0) entered disabled state
[ 1851.294389][T15155] dummy0: entered allmulticast mode
[ 1851.295450][T15155] dummy0: entered promiscuous mode
[ 1851.318583][T15156] br0: port 1(dummy0) entered blocking state
[ 1851.318843][T15156] br0: port 1(dummy0) entered forwarding state
[ 1853.283590][   T12] dummy0: left allmulticast mode
[ 1853.283898][   T12] dummy0: left promiscuous mode
[ 1853.284092][   T12] br0: port 1(dummy0) entered disabled state