When a container is set to use the host networking mode, it will share the networking namespace with the host machine allowing the container to listen on the host's IP address.
Using the host networking mode means that the container shares the host's networking namespace. This allows the container to bind ports directly to the host's IP address. It's crucial for certain applications that require direct visibility from external networks without network address translation (NAT). Other answers might seem correct, but they do not accurately describe the behavior of containers in host network mode.