IMPORTANT:
The class-identry above is a regular expression designed to allow a response to a class-idof an Itanium-based system performing a network boot or an IgniteDHCPDeviceGroup in /etc/dhcptab. This is not a valid class-idfor use in an Ignite-UX install file system. Systems using a DHCP device group for installing anonymous Itanium-based systems should have is_net_info_temporary set to TRUE to prevent systems from using the IP address gained via DHCP after installation.
Since regular expression matching is used, means "or" and allows response to an incoming class-idthat matches either expression. This example entry would support responding to the initial Itanium-based system boot request as well as subsequent DHCP requests during Ignite-UX operation.
The DHCP servers that respond to any DHCP class-id must be reconfigured or isolated to a different subnet.
The information in this section will not help you isolate a system booting Ignite-UX from other DHCP or PXE boot servers when attempting to network boot from EFI. This information does help you stop other DHCP servers from communicating with the installed system after it has already performed a network boot and downloaded an install kernel and install file system.
If you wish to only accept DHCP offers from a specific server after the install kernel and file system loads, consider using the dhcp_server keyword in the install file system. The use of the dhcp_server keyword has no effect on the EFI/PXE boot process.
46 Simple Network: Creating a Server for Anonymous Clients