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Signed-off-by: Janos <86970079+janosdebugs@users.noreply.github.com> Signed-off-by: Damian Stasik <920747+damianstasik@users.noreply.github.com> Signed-off-by: Roman Grinovski <roman.grinovski@gmail.com> Co-authored-by: Damian Stasik <920747+damianstasik@users.noreply.github.com> Co-authored-by: Roman Grinovski <roman.grinovski@gmail.com>
44 lines
1.9 KiB
Plaintext
44 lines
1.9 KiB
Plaintext
---
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description: Upgrading to OpenTofu v1.6
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---
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# Upgrading to OpenTofu v1.6
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OpenTofu v1.6 is the first release in the stable OpenTofu v1.0 series.
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OpenTofu v1.6 honors the
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[OpenTofu v1.0 Compatibility Promises](../../language/v1-compatibility-promises.mdx),
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but there are some behavior changes outside of those promises that may affect a
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small number of users. Specifically, the following updates may require
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additional upgrade steps:
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* [Linux DNS resolver changes](#linux-dns-resolver-changes)
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See [the full changelog](https://github.com/opentofu/opentofu/blob/v1.6/CHANGELOG.md)
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for more details. If you encounter any problems during upgrading which are not
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covered this guide, please start a new topic in
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[the OpenTofu community forum](https://github.com/opentofu/opentofu/discussions)
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to discuss it.
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## Linux DNS resolver changes
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OpenTofu on Linux uses a built-in DNS resolver rather than using the DNS
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resolver from the platform's C library, because this allows OpenTofu to run
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on systems with many different C libraries.
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In OpenTofu v1.6, the DNS resolver will now notice when you have set the
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`trust-ad` option in your `/etc/resolve.conf` file, and will respond by setting
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the "authentic data" option in outgoing DNS requests to better match the
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behavior of the GNU libc DNS resolver.
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OpenTofu does not pay any attention to the corresponding option in responses,
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but some DNSSEC-aware recursive resolvers return different responses when the
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request option isn't set. This should therefore avoid some potential situations
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where a DNS request from OpenTofu might get a different response than a
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similar request from other software on your system.
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We don't expect this behavior change to be significant for most OpenTofu users.
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Note that this change affects only DNS requests made by OpenTofu CLI itself,
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and not requests made by providers. Provider plugins are separate programs
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which handle DNS resolution themselves and so may have different behavior.
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