Why we should include this into the repository? This library extends functionality for dnscrypt-proxy and can be used to enable DNSSEC support for OpenSSH (which is useful for SSHFP records). Additionally, the drill utility included in the package allows for debugging DNSSEC.
Open source? Yes
How many users do you anticipate will use this software? Users of dnscrypt-proxy and OpenSSH (when built with DNSSEC support). People who have to debug DNSSEC.
Link to source tarball/zip file: https://www.nlnetlabs.nl/downloads/ldns/ldns-1.7.0.tar.gz