[crac] RFR: DNS cache maintenance

[Radim Vansa]

On Wed, 8 Feb 2023 18:39:39 GMT, Anton Kozlov <akozlov at openjdk.org> wrote:

>> This draft PR contains a backport of issue that prevents compilation on systems with newer glibc versions; ideally the backport should be integrated first and then this PR can be rebased.
>
> Looks very nice! I don't see this to the Draft anymore :)

@AntonKozlov Thanks for the review, updated.

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PR: https://git.openjdk.org/crac/pull/40