[ 2256.537116][ T1606] br0: port 1(dummy0) entered blocking state
[ 2256.537309][ T1606] br0: port 1(dummy0) entered disabled state
[ 2256.537473][ T1606] dummy0: entered allmulticast mode
[ 2256.538857][ T1606] dummy0: entered promiscuous mode
[ 2256.569679][ T1607] br0: port 1(dummy0) entered blocking state
[ 2256.569858][ T1607] br0: port 1(dummy0) entered forwarding state
[ 2258.906331][   T70] dummy0: left allmulticast mode
[ 2258.906564][   T70] dummy0: left promiscuous mode
[ 2258.906835][   T70] br0: port 1(dummy0) entered disabled state