[ 1906.051037][T12860] br0: port 1(dummy0) entered blocking state
[ 1906.051280][T12860] br0: port 1(dummy0) entered disabled state
[ 1906.051502][T12860] dummy0: entered allmulticast mode
[ 1906.052557][T12860] dummy0: entered promiscuous mode
[ 1906.076880][T12861] br0: port 1(dummy0) entered blocking state
[ 1906.077116][T12861] br0: port 1(dummy0) entered forwarding state
[ 1908.040347][   T12] dummy0: left allmulticast mode
[ 1908.041176][   T12] dummy0: left promiscuous mode
[ 1908.041497][   T12] br0: port 1(dummy0) entered disabled state