[ 2440.060012][T12136] br0: port 1(dummy0) entered blocking state
[ 2440.060370][T12136] br0: port 1(dummy0) entered disabled state
[ 2440.060702][T12136] dummy0: entered allmulticast mode
[ 2440.062395][T12136] dummy0: entered promiscuous mode
[ 2440.106956][T12137] br0: port 1(dummy0) entered blocking state
[ 2440.107307][T12137] br0: port 1(dummy0) entered forwarding state
[ 2442.590276][   T12] dummy0: left allmulticast mode
[ 2442.590569][   T12] dummy0: left promiscuous mode
[ 2442.590888][   T12] br0: port 1(dummy0) entered disabled state