add this file: 
net-snmp-cmaX-5.1.2-220.rhel3.src.rpm

to the web page(s) below:
http://unity2pro/jsp/dynamic/download.jsp?langId=60&versionId=22481
http://unity2pro/jsp/dynamic/download.jsp?langId=60&versionId=22480


md5sum number is:
5424618671bf742b1f270b4ae487c79e	net-snmp-cmaX-< version >.rhel3.src.rpm