GHSA-X84C-P2G9-RQV9 IPv6 enabled on IPv4-only network interfaces

In 26.0.0 and 26.0.1, IPv6 is not disabled on network interfaces, including those belonging to networks where --ipv6=false. Impact A container with an ipvlan or macvlan interface will normally be configured to share an external network link with the host machine. Because of this direct access, wi...