Docker Engine 26.1.2 and 26.1.1 Release Notes

- Deprecated and removed features, see [Deprecated Features](https://github.com/docker/cli/blob/v26.1.3/docs/deprecated.md). - Changes to the Engine API, see [API version history](https://github.com/moby/moby/blob/v26.1.3/docs/api/version-history.md). ### Bug fixes and enhancements - Fix a regression that prevented the use of DNS servers within a `--internal` network. [moby/moby#47832](https://github.com/moby/moby/pull/47832) - When the internal DNS server's own address is supplied as an external server address, ignore it to avoid unproductive recursion. [moby/moby#47833](https://github.com/moby/moby/pull/47833) ### Packaging updates - Allow runc to kill containers when confined to the runc profile in AppArmor version 4.0.0 and later. [moby/moby#47829](https://github.com/moby/moby/pull/47829) ## 26.1.2 {{< release-date date="2024-05-08" >}} For a full list of pull requests and changes in this release, refer to the relevant GitHub milestones: - [docker/cli, 26.1.2 milestone](https://github.com/docker/cli/issues?q=is%3Aclosed+milestone%3A26.1.2) - [moby/moby, 26.1.2 milestone](https://github.com/moby/moby/issues?q=is%3Aclosed+milestone%3A26.1.2) - Deprecated and removed features, see [Deprecated Features](https://github.com/docker/cli/blob/v26.1.2/docs/deprecated.md). - Changes to the Engine API, see [API version history](https://github.com/moby/moby/blob/v26.1.2/docs/api/version-history.md). ### Bug fixes and enhancements - Fix an issue where the CLI process would sometimes hang when a container failed to start. [docker/cli#5062](https://github.com/docker/cli/pull/5062) ### Packaging updates - Update Go runtime to 1.21.10. [moby/moby#47806](https://github.com/moby/moby/pull/47806) ## 26.1.1 {{< release-date date="2024-04-30" >}} For a full list of pull requests and changes in this release, refer to the relevant GitHub milestones: - [docker/cli, 26.1.1 milestone](https://github.com/docker/cli/issues?q=is%3Aclosed+milestone%3A26.1.1) - [moby/moby, 26.1.1 milestone](https://github.com/moby/moby/issues?q=is%3Aclosed+milestone%3A26.1.1) - Deprecated and removed features, see [Deprecated Features](https://github.com/docker/cli/blob/v26.1.1/docs/deprecated.md). - Changes to the Engine API, see [API version history](https://github.com/moby/moby/blob/v26.1.1/docs/api/version-history.md). ### Bug fixes and enhancements - Fix `docker run -d` printing an `context canceled` spurious error when OpenTelemetry is configured. [docker/cli#5044](https://github.com/docker/cli/pull/5044) - Experimental environment variable `DOCKER_BRIDGE_PRESERVE_KERNEL_LL=1` will prevent the daemon from removing the kernel-assigned link local address on a Linux bridge. [moby/moby#47775](https://github.com/moby/moby/pull/47775) - Resolve an issue preventing container creation on hosts with a read-only `/proc/sys/net` filesystem. If IPv6 cannot be disabled on an interface due to this, either disable IPv6 by default on the host or ensure `/proc/sys/net` is read-write. To bypass the error, set the environment variable `DOCKER_ALLOW_IPV6_ON_IPV4_INTERFACE=1` before starting the Docker daemon. [moby/moby#47769](https://github.com/moby/moby/pull/47769)

This document outlines bug fixes, enhancements, and packaging updates for Docker Engine versions 26.1.2 and 26.1.1. Version 26.1.2 resolves an issue where the CLI process would hang when a container failed to start and updates the Go runtime to 1.21.10. Version 26.1.1 fixes a spurious error with `docker run -d` when OpenTelemetry is configured, introduces an experimental environment variable to preserve kernel-assigned link-local addresses, and resolves an issue preventing container creation on hosts with a read-only `/proc/sys/net` filesystem. Both versions also include links to lists of pull requests, deprecated features, and API version history.