Sun Java System Portal Server 7.1 Release Notes for Microsoft Windows

Portal Server SRA, FTP, and Netlet Does Not Work if yhe Reverse Lookup is Not Configured in DHCP (6472391)

While using the IP address in the netlet, if the reverse lookup entry for a particular host is not configured in the DHCP server then the operation associated with that host does not work.

For example, if nslookup.exe ipaddress fails to return host name then the netlet operations do not work for these IP addresses.