Check whether DNS is configured on your client by verifying that a non-empty /etc/resolv.conf file exists.
If /etc/resolv.conf does not exist or is empty, check that your DHCP server is providing DNS server information to the client:
# /sbin/dhcpinfo DNSserv
If this command returns nothing, the DHCP server is not set up to provide DNS server information to the client. Contact your DHCP administrator to correct this problem.
If an /etc/resolv.conf file exists and is properly configured, check for the following possible problems and contact your system administrator for resolution:
The DNS server might not be resolving your IPS repository server name.
No default route to reach the DNS server exists.