Install libasyncns-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libasyncns-dev
Description:
Asynchronous name service query library development files
libasyncns is a C library for Linux/Unix for executing name service queries asynchronously. It is an asynchronous wrapper around getaddrinfo(3), getnameinfo(3), res_query(3) and res_search(3) from libc and libresolv. . This package contains development headers and libraries.
Homepage: http://0pointer.de/lennart/projects/libasyncns/
Version: 0.8-6
Section: libdevel