on net/net-snmp-current and on the FreeBSD net-snmp port, and may be
considered as an update to ucd-snmp. Changes since ucd-snmp include:
* complete rewrite of the agent internals
* new agent module API
* SNMPv3
* improved AgentX subagent handling
* many, many bugfixes in plugged memory leaks
* prevent DoS attacks from authenticated users