[ 2096.484878][ T4978] br0: port 1(dummy0) entered blocking state
[ 2096.485273][ T4978] br0: port 1(dummy0) entered disabled state
[ 2096.485482][ T4978] dummy0: entered allmulticast mode
[ 2096.486486][ T4978] dummy0: entered promiscuous mode
[ 2096.509903][ T4979] br0: port 1(dummy0) entered blocking state
[ 2096.510263][ T4979] br0: port 1(dummy0) entered forwarding state
[ 2098.528755][   T70] dummy0: left allmulticast mode
[ 2098.529790][   T70] dummy0: left promiscuous mode
[ 2098.530104][   T70] br0: port 1(dummy0) entered disabled state