[ 1972.303499][ T5792] br0: port 1(dummy0) entered blocking state
[ 1972.303749][ T5792] br0: port 1(dummy0) entered disabled state
[ 1972.303964][ T5792] dummy0: entered allmulticast mode
[ 1972.305234][ T5792] dummy0: entered promiscuous mode
[ 1972.333300][ T5793] br0: port 1(dummy0) entered blocking state
[ 1972.333555][ T5793] br0: port 1(dummy0) entered forwarding state
[ 1974.274644][   T70] dummy0: left allmulticast mode
[ 1974.275650][   T70] dummy0: left promiscuous mode
[ 1974.275898][   T70] br0: port 1(dummy0) entered disabled state