Install libnftnl7 by entering the following commands in the terminal:
sudo apt update sudo apt install libnftnl7
Description:
Netfilter nftables userspace API library
libnftnl is the low-level library for Netfilter 4th generation framework nftables. . Is the user-space library for low-level interaction with nftables Netlink's API over libmnl.
Homepage: https://git.netfilter.org/libnftnl
Version: 1.0.9-2
Section: universe/libs