ctnetlink netlink

The ctnetlink netlink tag covers Linux kernel topics related to the netfilter connection tracking subsystem and its netlink interface. Content under this tag focuses on security vulnerabilities, concurrency bugs, and locking fixes within the ctnetlink code, particularly those affecting conntrack expectation handling. Discussions emphasize the importance of patching these issues promptly, as they impact firewalls, routers, containers, and virtualized workloads. The tag is relevant for Linux system administrators and security professionals dealing with kernel dataplane stability and netfilter internals.