After upgrading Debian to Buster, an error occurred while checking domains in the .рф zone (.xn - p1ai): DNS CRITICAL - '/usr/bin/nslookup -sil' msg parsing exited with no address -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.monitoring-plugins.org/archive/help/attachments/20190817/3b8381d2/attachment.html>