[ 2676.144785] br0: port 1(dummy0) entered blocking state
[ 2676.144795] br0: port 1(dummy0) entered disabled state
[ 2676.144892] device dummy0 entered promiscuous mode
[ 2676.182967] br0: port 1(dummy0) entered blocking state
[ 2676.182973] br0: port 1(dummy0) entered forwarding state
[ 2676.183016] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready