fix ubuntu installation procedure #1084
Merged
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Purpose
Fix LDNS installation using CPAN on Ubuntu 22.04.
Context
Ubuntu 22.04 comes with OpenSSL 3, LDNS uses OpenSSL 1.1.1, the changes in the API break the build step of Zonemaster LDNS.
The LDNS package in Ubuntu 22.04 and Debian 11 is the right version to use algorithm 15 and 16. This PR change the installation instruction to use the system LDNS and not the internal one.
Changes
How to test this PR