[ 1977.473352][T20675] br0: port 1(dummy0) entered blocking state
[ 1977.473553][T20675] br0: port 1(dummy0) entered disabled state
[ 1977.473728][T20675] dummy0: entered allmulticast mode
[ 1977.475031][T20675] dummy0: entered promiscuous mode
[ 1977.495600][T20676] br0: port 1(dummy0) entered blocking state
[ 1977.495862][T20676] br0: port 1(dummy0) entered forwarding state
[ 1979.463779][   T12] dummy0: left allmulticast mode
[ 1979.464451][   T12] dummy0: left promiscuous mode
[ 1979.464670][   T12] br0: port 1(dummy0) entered disabled state