[ 2169.576728][T27898] br0: port 1(dummy0) entered blocking state
[ 2169.576911][T27898] br0: port 1(dummy0) entered disabled state
[ 2169.577075][T27898] dummy0: entered allmulticast mode
[ 2169.578033][T27898] dummy0: entered promiscuous mode
[ 2169.604529][T27899] br0: port 1(dummy0) entered blocking state
[ 2169.604868][T27899] br0: port 1(dummy0) entered forwarding state
[ 2171.542547][   T12] dummy0: left allmulticast mode
[ 2171.543215][   T12] dummy0: left promiscuous mode
[ 2171.543474][   T12] br0: port 1(dummy0) entered disabled state