[ 2304.184608][T20878] br0: port 1(dummy0) entered blocking state
[ 2304.184863][T20878] br0: port 1(dummy0) entered disabled state
[ 2304.185543][T20878] dummy0: entered allmulticast mode
[ 2304.186643][T20878] dummy0: entered promiscuous mode
[ 2304.212453][T20879] br0: port 1(dummy0) entered blocking state
[ 2304.212717][T20879] br0: port 1(dummy0) entered forwarding state
[ 2306.877161][   T12] dummy0: left allmulticast mode
[ 2306.877945][   T12] dummy0: left promiscuous mode
[ 2306.878306][   T12] br0: port 1(dummy0) entered disabled state