Install libnatpmp1 by entering the following commands in the terminal:
sudo apt update sudo apt install libnatpmp1
portable and fully compliant implementation of NAT-PMP
NAT-PMP is the direct concurrent to the UPnP IGD specification. It is providing a way to do NAT traversal. It is part of the Bonjour protocol specifications. At the moment it is mainly supported by Apple software and hardware. For a way to add NAT-PMP capabilities to your *BSD, Linux or (Open)Solaris Router, you should have a look at MiniUPnPd which is supporting NAT-PMP in addition to UPnP since December 2007 ! . libnatpmp is an attempt to make a portable and fully compliant implementation of the protocol NAT-PMP for the client side. It is based on non blocking sockets and all calls of the API are asynchronous. It is therefore very easy to integrate the NAT-PMP code to any event driven code. . This package contains the shared library.