Mellanox FlexBoot does not send user-class "iPXE" in DHCP request

[bensallen]

We're using the DHCP user-class option 76 from a DHCP request to identify clients as iPXE ( (https://github.com/warewulf/warewulf3/blob/master/provision/etc/dhcpd-template.conf#L14).

Mellanox FlexBoot is a modified iPXE, so we expected it would identify itself via this option as well. This doesn't appear to be case. An alternative method needs to be identified to conditionally set the filename option to the iPXE cfg file for FlexBoot.

Discussion and debugging in #100.

[macdems]

Just a idea: FlexBoot requests dhcp-client-identifier with a fixed prefix (as far as I remember it has two or three prefixes dependent on the card model following by the card GUID. I don't know much about DHCP config, but maybe it is possible to use this prefix to tell we are dealing with FlexBoot?

[truatpasteurdotfr]

I have a similar issue, with virtualbox (without the extension pack) pxe booting with a stripped down ipxe version which trigger the matching iPXE tag, but without the bzImage loading capacity...