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Validating, recursive, and caching DNS resolver

Unbound is a recursive-only caching DNS server which can perform DNSSEC validation of results. It implements only a minimal amount of authoritative service to prevent leakage to the root nameservers: forward lookups for localhost, reverse for and ::1, and NXDOMAIN for zones served by AS112. Stub and forward zones are supported.


Install the latest version of unbound as follows:

guix install unbound

Or install a particular version:

guix install unbound@1.19.1

You can also install packages in augmented, pure or containerized environments for development or simply to try them out without polluting your user profile. See the guix shell documentation for more information.