Class matching

[Bill Shirley]

Is there a way to include a device in a class based on its membership in another class?:
class "Kyocera" {
         match if substring(hardware, 1,3) = 00:c0:ee;
         set member_of = "Kyocera";
}
class "Brother" {
         match if substring(hardware, 1,3) = 30:05:5C;
         set member_of = "Brother";
}

Such as:
class "Printers" {
         match if (
             option server.class = "Kyocera"
             or option server.class = "Brother"
         );
}
if so, what do a replace "option server.class" with?

I've also tried using the variable "member_of" set above:
class "Printers" {
        match if (
                member_of = "Kyocera"
                or member_of = "Brother"
        );
}
which doesn't work.

TIA,
Bill

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20140929/50451bef/attachment.html>