[ 2171.275495][ T8198] br0: port 1(dummy0) entered blocking state
[ 2171.275813][ T8198] br0: port 1(dummy0) entered disabled state
[ 2171.276101][ T8198] dummy0: entered allmulticast mode
[ 2171.277346][ T8198] dummy0: entered promiscuous mode
[ 2171.311715][ T8199] br0: port 1(dummy0) entered blocking state
[ 2171.312130][ T8199] br0: port 1(dummy0) entered forwarding state
[ 2173.815827][   T68] dummy0: left allmulticast mode
[ 2173.816878][   T68] dummy0: left promiscuous mode
[ 2173.817252][   T68] br0: port 1(dummy0) entered disabled state