[ 1840.989617][T28103] br0: port 1(dummy0) entered blocking state
[ 1840.989845][T28103] br0: port 1(dummy0) entered disabled state
[ 1840.990482][T28103] dummy0: entered allmulticast mode
[ 1840.991401][T28103] dummy0: entered promiscuous mode
[ 1841.015306][T28104] br0: port 1(dummy0) entered blocking state
[ 1841.015647][T28104] br0: port 1(dummy0) entered forwarding state
[ 1842.939985][   T12] dummy0: left allmulticast mode
[ 1842.940610][   T12] dummy0: left promiscuous mode
[ 1842.940849][   T12] br0: port 1(dummy0) entered disabled state