[ 2814.772896] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2814.830704] br0: port 1(veth1) entered blocking state
[ 2814.831300] br0: port 1(veth1) entered disabled state
[ 2814.833604] device veth1 entered promiscuous mode
[ 2814.834235] br0: port 1(veth1) entered blocking state
[ 2814.834840] br0: port 1(veth1) entered forwarding state
[ 2814.836593] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready
[ 2814.842431] br0: port 1(veth1) entered disabled state
[ 2814.844804] br0: port 2(veth3) entered blocking state
[ 2814.845343] br0: port 2(veth3) entered disabled state
[ 2814.846008] device veth3 entered promiscuous mode
[ 2814.875594] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 2814.876289] br0: port 1(veth1) entered blocking state
[ 2814.876830] br0: port 1(veth1) entered forwarding state
[ 2814.924006] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 2814.924841] br0: port 2(veth3) entered blocking state
[ 2814.925374] br0: port 2(veth3) entered forwarding state
[ 2823.518032] device veth0 entered promiscuous mode
[ 2823.857983] device veth2 entered promiscuous mode
[ 2961.774302] br0: port 1(veth1) entered disabled state
[ 2961.789399] br0: port 2(veth3) entered disabled state
[ 2961.814050] device veth1 left promiscuous mode
[ 2961.814733] br0: port 1(veth1) entered disabled state
[ 2961.822737] device veth3 left promiscuous mode
[ 2961.823400] br0: port 2(veth3) entered disabled state