[ 2105.157654][T12087] br0: port 1(dummy0) entered blocking state
[ 2105.158200][T12087] br0: port 1(dummy0) entered disabled state
[ 2105.158376][T12087] dummy0: entered allmulticast mode
[ 2105.159563][T12087] dummy0: entered promiscuous mode
[ 2105.186407][T12088] br0: port 1(dummy0) entered blocking state
[ 2105.186713][T12088] br0: port 1(dummy0) entered forwarding state
[ 2107.224208][   T12] dummy0: left allmulticast mode
[ 2107.224542][   T12] dummy0: left promiscuous mode
[ 2107.224820][   T12] br0: port 1(dummy0) entered disabled state