From: Dax KelsonTo: Etherboot users listSubject: [Etherboot-users] Example ISC DHCP v3 dhcpd.conf using conditional operationsDate: Wed, 13 Jun 2001 20:22:21 -0600Hopefully someone will find this useful.  I spent a long time trackingdown and figuring out all the pieces.  To the powers that be, feel free tostick this in contrib if you like it.Goal:  Use the vendor-class-identifier and ISC DHCP v3 "match" option toconditionally send proper options only when the DHCP discover/request frometherboot comes in.  We use static-MAC-to-IP mappings for classroomcomputers, and dynamic dhcp ranges for other clients (student laptops,etc).I used Etherboot 5.0.1 and the patch (required) in this email:http://www.geocrawler.com/lists/3/SourceForge/5299/0/5952625/Furture versions of Etherboot will likely already have this patchincluded.Dax KelsonGuru Labs######### Begin ISC DHCP v3 dhcpd.conf #############ddns-update-style ad-hoc;# Global default, can be overriddenfilename "/exports/kickstart/class1-rh7.1.ks";# Define options for Etherboot# There are more, these are just the ones I'm usingoption ebootmagic code 128 = string;option cmdline code 129 = string;option menudflts code 160 = string;option menuline1 code 192 = string;option menuline2 code 193 = string;option menuline3 code 194 = string;option menuline4 code 195 = string;option menuline5 code 196 = string;option menuline6 code 197 = string;option menuline7 code 198 = string;option menuline8 code 199 = string;option menuline9 code 200 = string;option menuline10 code 201 = string;option menuline11 code 202 = string;option menuline12 code 203 = string;option menuline13 code 204 = string;option menuline14 code 205 = string;option menuline15 code 206 = string;option menuline16 code 207 = string;option motdline1 code 184 = string;class "Etherboot" {    match if substring (option vendor-class-identifier, 0, 9) = "Etherboot";        option ebootmagic  = E4:45:74:68:00:00;# We don't use this here, because different menu items require# different cmdlines.  In our ".nbi" files we specify the cmdlines#        option cmdline  = "ks initrd=initrd.img lang= devfs=nomount";        option motdline1  = "Welcome to Guru Labs classroom";        option menudflts  = "timeout=30:default=192";        option menuline1  = "Boot from Hard Drive (Default):::/dev/hda:::";        option menuline2  = "Boot from Floppy:::/dev/fd0:::";        option menuline3  = "Boot from CDROM::::::";        option menuline4  = "Kickstart install Red Hat 7.1:::rh71-ks-etherboot.nbi:::";        option menuline5  = "Red Hat 7.1 network rescue:::rh71-rescue-etherboot.nbi:::";        option menuline6  = "Boot Win98SE startup floppy:::win98se-startupdisk.nbi:::";        option menuline7  = "Jumpstart install Solaris 8 (not working yet):::/dev/hda:::";        option menuline8  = "Install Windows 98 SE (not working yet):::/dev/hda:::";        option menuline9  = "Install Windows 2000 (not working yet):::/dev/hda:::";        option menuline10  = "Install FreeBSD 4.3 (not working yet):::/dev/hda:::";        option menuline11  = "Install OpenBSD 2.9 (not working yet):::/dev/hda:::";	# This is a hidden menu item, it should be password protected too        option menuline12  = "^[[3D^[[K^[[1A^M:::/dev/hda:::";# We are using the menu, with different bootfiles.  So we don't use this.# If you weren't using a menu, you could use this override the global# default "filename" setting.#        filename "rh71-ks-etherboot";# Use the following if etherboot compiled with -DREQUIRE_VCI_ETHERBOOT        option vendor-encapsulated-options 3c:09:45:74:68:65:72:62:6f:6f:74:ff;}subnet 10.100.0.0 netmask 255.255.255.0 {        authoritative;        option routers                  10.100.0.254;        option subnet-mask              255.255.255.0;        option domain-name              "example.com";        option domain-name-servers      10.100.0.254;        option time-offset              -7; # US/Mountain        option ntp-servers              10.100.0.254;        range dynamic-bootp 10.100.0.175 10.100.0.250;        default-lease-time 21600;        max-lease-time 43200;        option netbios-name-servers     10.100.0.254;        option netbios-node-type 2;        use-host-decl-names on;        next-server server1.example.com;}host station1 {        hardware ethernet 00:01:03:de:57:e2;        fixed-address 10.100.0.1;}host station2 {        hardware ethernet 00:01:03:de:57:e7;        fixed-address 10.100.0.2;}host station3 {        hardware ethernet 00:01:03:de:57:b4;        fixed-address 10.100.0.3;}host station4 {        hardware ethernet 00:01:03:de:57:38;        fixed-address 10.100.0.4;}host station5 {        hardware ethernet 00:01:03:de:58:3d;        fixed-address 10.100.0.5;}## Etc, etc############### End ISC DHCP v3 dhcpd.conf #############