libsnmp-dev 5.8+dfsg-2ubuntu2 (armhf binary) in ubuntu focal

 The Simple Network Management Protocol (SNMP) provides a framework
 for the exchange of management information between agents (servers)
 and clients.
 .
 The Net-SNMP development files include the library headers, static
 libraries, net-snmp-config scripts and documentation needed for development
 of custom SNMP applications.