[ 2203.350812][T31486] br0: port 1(dummy0) entered blocking state
[ 2203.351675][T31486] br0: port 1(dummy0) entered disabled state
[ 2203.351848][T31486] dummy0: entered allmulticast mode
[ 2203.352910][T31486] dummy0: entered promiscuous mode
[ 2203.383340][T31487] br0: port 1(dummy0) entered blocking state
[ 2203.383651][T31487] br0: port 1(dummy0) entered forwarding state
[ 2205.834707][   T12] dummy0: left allmulticast mode
[ 2205.835896][   T12] dummy0: left promiscuous mode
[ 2205.836212][   T12] br0: port 1(dummy0) entered disabled state