This fix applies to Ensim Pro 4.0.1 for RHEL.
Redhat have changed the packaging for bind. They have split out the libraries to a new rpm called 'bind-libs'. So the upgraded bind version now contains three pakcages "bind", "bind-utils", "bind-libs". Upgrading bind to latest version breaks most of the dns commands in the site fst.
To apply the fix,
1. Create a script siteinfo.custom.sh in /etc/virtualhosting/filelists with the following contains
while [ $? == 0 ]; do
2. Make the script executable with the command
chmod +x /etc/virtualhosting/filelists/siteinfo.custom.sh
3. Run the Webppliance in a maintenance mode to update site fst