steak:/temp # rpm -ivh net-snmp-5.1.2-3.i586.rpm
Preparing...                ########################################### [100%]
        package net-snmp-5.1.2-3 is already installed
steak:/temp # rpm -e net-snmp-5.1.2-3.i586.rpm
error: package net-snmp-5.1.2-3.i586.rpm is not installed