Docker Updates: Networking Fixes, Feature Removals, Packaging Updates, and Go SDK Improvements

- containerd image store: Make `docker load --platform` return an error when the requested platform isn't loaded. [moby/moby#48718](https://github.com/moby/moby/pull/48718) - Fix validation of `--link` option. [docker/cli#5739](https://github.com/docker/cli/pull/5739) - Add validation of network-diagnostic-port daemon configuration option. [moby/moby#49305](https://github.com/moby/moby/pull/49305) - Unless explicitly configured, an IP address is no longer reserved for a gateway in cases where it is not required. Namely, “internal” bridge networks with option `com.docker.network.bridge.inhibit_ipv4`, `ipvlan` or `macvlan` networks with no parent interface, and L3 IPvlan modes. [moby/moby#49261](https://github.com/moby/moby/pull/49261) - If a custom network driver reports capability `GwAllocChecker` then, before a network is created, it will get a `GwAllocCheckerRequest` with the network's options. The custom driver may then reply that no gateway IP address should be allocated. [moby/moby#49372](https://github.com/moby/moby/pull/49372) - Fixed an issue that meant a container could not be attached to an L3 IPvlan at the same time as other network types. [moby/moby#49130](https://github.com/moby/moby/pull/49130) - Remove the correct `/etc/hosts` entries when disconnecting a container from a network. [moby/moby#48857](https://github.com/moby/moby/pull/48857) - Fix duplicate network disconnect events. [moby/moby#48800](https://github.com/moby/moby/pull/48800) - Resolve issues related to changing `fixed-cidr` for `docker0`, and inferring configuration from a user-managed default bridge (`--bridge`). [moby/moby#48319](https://github.com/moby/moby/pull/48319) - Remove feature flag `windows-dns-proxy`, introduced in release 26.1.0 to control forwarding to external DNS resolvers from Windows containers, to make `nslookup` work. It was enabled by default in release 27.0.0. [moby/moby#48738](https://github.com/moby/moby/pull/48738) - Remove an `iptables` mangle rule for checksumming SCTP. The rule can be re-enabled by setting `DOCKER_IPTABLES_SCTP_CHECKSUM=1` in the daemon's environment. This override will be removed in a future release. [moby/moby#48149](https://github.com/moby/moby/pull/48149) - Faster connection to bridge networks, in most cases. [moby/moby#49302](https://github.com/moby/moby/pull/49302) ### Packaging updates - Update Go runtime to [1.23.6](https://go.dev/doc/devel/release#go1.23.6). [docker/cli#5795](https://github.com/docker/cli/pull/5795), [moby/moby#49393](https://github.com/moby/moby/pull/49393), [docker/docker-ce-packaging#1161](https://github.com/docker/docker-ce-packaging/pull/1161) - Update `runc` to [v1.2.5](https://github.com/opencontainers/runc/releases/tag/v1.2.5) (static binaries only). [moby/moby#49464](https://github.com/moby/moby/pull/49464) - Update containerd to [v1.7.25](https://github.com/containerd/containerd/releases/tag/v1.7.25). [moby/moby#49252](https://github.com/moby/moby/pull/49252) - Update BuildKit to [v0.20.0](https://github.com/moby/buildkit/releases/tag/v0.20.0). [moby/moby#49495](https://github.com/moby/moby/pull/49495) - Update Buildx to [v0.21.0](https://github.com/docker/buildx/releases/tag/v0.21.0). [docker/docker-ce-packaging#1166](https://github.com/docker/docker-ce-packaging/pull/1166) - Update Compose to [v2.32.4](https://github.com/docker/compose/releases/tag/v2.32.3). [docker/docker-ce-packaging#1143](https://github.com/docker/docker-ce-packaging/pull/1143) - The canonical source for the `dockerd(8)` man page has been moved back to the `moby/moby` repository itself. [moby/moby#48298](https://github.com/moby/moby/pull/48298) ### Go SDK - Improve validation of empty object IDs. The client now returns an "Invalid Parameter" error when trying to use an empty ID or name. This changes the error returned by some "Inspect" functions from a "Not found" error to an "Invalid Parameter". [moby/moby#49381](https://github.com/moby/moby/pull/49381) - `Client.ImageBuild()` now omits default values from the API request's query string. [moby/moby#48651](https://github.com/moby/moby/pull/48651)

This section highlights updates to Docker, including networking fixes related to IP address reservation, IPvlan attachments, `/etc/hosts` entries, network disconnect events, and `docker0` configuration. It also covers the removal of the `windows-dns-proxy` feature flag and an iptables mangle rule. Packaging updates include Go runtime, runc, containerd, BuildKit, Buildx, and Compose version upgrades. Furthermore, the canonical source for the `dockerd(8)` man page has been moved back to the `moby/moby` repository. Go SDK improvements address validation of empty object IDs and omit default values from API requests.