[ 2000.186074][T21222] br0: port 1(dummy0) entered blocking state
[ 2000.186274][T21222] br0: port 1(dummy0) entered disabled state
[ 2000.186468][T21222] dummy0: entered allmulticast mode
[ 2000.187342][T21222] dummy0: entered promiscuous mode
[ 2000.212085][T21223] br0: port 1(dummy0) entered blocking state
[ 2000.212588][T21223] br0: port 1(dummy0) entered forwarding state
[ 2002.213314][   T68] dummy0: left allmulticast mode
[ 2002.214326][   T68] dummy0: left promiscuous mode
[ 2002.214562][   T68] br0: port 1(dummy0) entered disabled state