match partial dhcp-client-identifier option
I'm working with development on diskless clients and these PXE-boot off of a SLES server. The thing is that it's not always the same clients booting and to complicate matters more there are two different hardware versions right now, so I want one version to boot one linux and the other to boot another linux. All this must be controlled by the dhcp client-identifier option which, in the new version is unique for every client, except for the 4 first bytes.
client 1 with HW A sends CID "fooA bootme"
client 2 with HW A sends CID "fooA biteme1"
if substring (option dhcp-client-identifier, 1, 4) = "fooA"
if substring (option dhcp-client-identifier, 0, 4) = 66:6F:6F:41
with no success.
how can I match the "fooA" part with dhcp-client-identifier option to make client 1 and 2 boot the same linux?