[ 2347.447393][T21223] br0: port 1(dummy0) entered blocking state
[ 2347.447737][T21223] br0: port 1(dummy0) entered disabled state
[ 2347.448053][T21223] dummy0: entered allmulticast mode
[ 2347.449270][T21223] dummy0: entered promiscuous mode
[ 2347.479483][T21224] br0: port 1(dummy0) entered blocking state
[ 2347.480034][T21224] br0: port 1(dummy0) entered forwarding state
[ 2349.886610][   T69] dummy0: left allmulticast mode
[ 2349.887310][   T69] dummy0: left promiscuous mode
[ 2349.887971][   T69] br0: port 1(dummy0) entered disabled state