steak:/temp # rpm -Uvh --replacepkgs net-snmp-5.1.2-3.i586.rpm
Preparing...                ########################################### [100%]
   1:net-snmp               ########################################### [100%]
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
steak:/temp # rpm -e net-snmp
/var/tmp/rpm-tmp.12210: line 7: /etc/init.d/snmpd: Permission denied
error: %preun(net-snmp-5.1.2-3) scriptlet failed, exit status 126