[ 2545.286581] br0: port 1(dummy0) entered blocking state
[ 2545.286592] br0: port 1(dummy0) entered disabled state
[ 2545.286722] device dummy0 entered promiscuous mode
[ 2545.333706] br0: port 1(dummy0) entered blocking state
[ 2545.333714] br0: port 1(dummy0) entered forwarding state
[ 2545.333757] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready