Symptoms ... The source code for the F5RealServerPlugin.dll is supposed to be distributed on the BIG-IP iso, at this path <ISO-ROOT>/BIGIP<VERSION>/downloads/rsplug-ins/F5RealMon.src.tar.gz This tar file containing the source code is missing from some versions of BIG-IP distribution media. ... Impact ... No loss of functionality. ... Incorrect information provided: customers will look for a tar.gz file that isn't where we say it is. ... Conditions ... Workaround ... The file is available on the ISOs of full releases (not HF rollup) of BIG-IP, since and including BIGIP-11.5.0.0.0.221.iso BIGIP-11.5.1.0.0.110.iso Customers may download either of these ISOs, burn them to a CD or use a Windows or Linux tool to mount the ISO directly, and copy the file from <ISO-ROOT>/downloads/rsplug-ins/F5RealMon.src.tar.gz ... Fix Information ... Provide instructions for obtaining the distribution of source code for F5RealServerPlugin.dll ... Behavior Change