Install libnl-xfrm-3-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libnl-xfrm-3-dev
development library and headers for libnl-xfrm-3
This is a library for applications dealing with netlink sockets. The library provides an interface for raw netlink messaging and various netlink family specific interfaces. . This package contains the files that are needed to build applications using libnl-xfrm-3.