--- security: - | Fixes ``net.ipv4.ip_forward`` not to be enabled by Kolla Ansible on the default network namespace. It was enabled on hosts with Neutron L3 Agent (thus in most common setups with OVS and/or Linux Bridge, but not OVN) and allowed, unless users had extra iptables rules to avoid that, any traffic to be accepted for forwarding (as long as it was routable and passed other checks). Users of existing setups are advised to re-evaluate whether they need this sysctl enabled and disable if not necessary. Kolla Ansible will simply no longer try to set this sysctl at all. Neutron L3 Agent handles forwarding enablement per managed namespace. `LP#1945453 `__