client identifier

[tekgnosis]

I've encountered this in a different context.

One easy way to stop iPXE from doing UID-present DHCP call is to 'skip' it entirely. Use undionly.kkpxe, and use the use-cache 1 flag in your .ipxe script to keep the IP info from the PXE stack DHCP response packet instead of making a new request. PXE doesn't support UID, so will have the MAC-only lease assigned to it, which the linux install will then re-use.

More linux distros are including UID now, so if this matters in a lab with many reboots it can be helpful to know that you can disable UID (Client Identifier) support in all the common dhcpc implementations.

E.g. udhcpc has ' -C ' to disable client identifier.