Install libnet-dns-async-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libnet-dns-async-perl
Asynchronous DNS helper for high volume perl applications
Net::DNS::Async is a fire-and-forget asynchronous DNS helper. That is, the user application adds DNS questions to the helper, and the callback will be called at some point in the future without further intervention from the user application. The application need not handle selects, timeouts, waiting for a response or any other such issues. . If the same query is added to the queue more than once, the module may combine the queries; that is, it will perform the query only once, and will call each callback registered for that query in turn, passing the same Net::DNS::Response object to each query. For this reason, you should not modify the Net::DNS::Response object in any way lest you break things horribly for a subsequent callback. . This module is similar in principle to POE::Component::Client::DNS, but does not require POE.