[ 1782.293426] br0: port 1(dummy0) entered blocking state
[ 1782.293464] br0: port 1(dummy0) entered disabled state
[ 1782.293498] dummy0: entered allmulticast mode
[ 1782.293548] dummy0: entered promiscuous mode
[ 1782.297047] br0: port 1(dummy0) entered blocking state
[ 1782.297120] br0: port 1(dummy0) entered forwarding state
[ 1782.513220] dummy0: left allmulticast mode
[ 1782.513251] dummy0: left promiscuous mode
[ 1782.513290] br0: port 1(dummy0) entered disabled state