[  749.494650][ T4024] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[  749.983912][ T4029] br0: port 1(veth0) entered blocking state
[  749.984410][ T4029] br0: port 1(veth0) entered disabled state
[  749.984679][ T4029] veth0: entered allmulticast mode
[  749.987552][ T4029] veth0: entered promiscuous mode
[  750.148509][ T4030] br0: port 2(veth1) entered blocking state
[  750.148791][ T4030] br0: port 2(veth1) entered disabled state
[  750.149146][ T4030] veth1: entered allmulticast mode
[  750.151832][ T4030] veth1: entered promiscuous mode
[  750.647529][   T52] br0: port 1(veth0) entered blocking state
[  750.647988][   T52] br0: port 1(veth0) entered forwarding state
[  750.811092][ T1728] br0: port 2(veth1) entered blocking state
[  750.811377][ T1728] br0: port 2(veth1) entered forwarding state
[  752.271041][   T74] veth1: left allmulticast mode
[  752.271401][   T74] veth1: left promiscuous mode
[  752.271747][   T74] br0: port 2(veth1) entered disabled state
[  752.274069][   T74] veth0: left allmulticast mode
[  752.274279][   T74] veth0: left promiscuous mode
[  752.274579][   T74] br0: port 1(veth0) entered disabled state