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List:       dhcp-hackers
Subject:    Re: Possible regression in 3.1.0?
From:       "David W. Hankins" <David_Hankins () isc ! org>
Date:       2007-08-10 16:02:18
Message-ID: 20070810160218.GB31592 () isc ! org
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On Thu, Aug 09, 2007 at 05:08:25PM -0700, Matt Cowger wrote:
> option space pxelinux;
> option pxelinux.magic      code 208 = string;
> option pxelinux.configfile code 209 = text;
> option pxelinux.pathprefix code 210 = text;
> option pxelinux.reboottime code 211 = unsigned integer 32;
> 
> site-option-space "pxelinux";

What's happening here is options less than 224 aren't being pulled
out of the named site-local option space, they're being tried in
the dhcp option space.

From RELNOTES:

                        Changes since 3.0 (New Features)

- RFC3942 compliance, site-local option spaces start at 224 now, not 128.


We're sort of inbetween RFC's.  RFC3942 says that 224+ qualify as
site-local, and draft-ietf-dhc-pxelinux hasn't become an RFC yet.

You'll want to redefine your 208-211 options as regular DHCP options,
rather than site local ones, in 3.1.0.  Those definitions will
supersede anything we configure in a public version:

#if 0
        /* PXELINUX options: not defined by RFC yet */
        { "pxelinux-magic", "BBBB",             &dhcp_universe, 208, 1 },
        { "loader-configfile", "t",             &dhcp_universe, 209, 1 },
        { "loader-pathprefix", "t",             &dhcp_universe, 210, 1 },
        { "loader-reboottime", "L",             &dhcp_universe, 211, 1 },
#endif

(I have a suspicion "BBBB" will become an "X" to match usual use)

-- 
Ash bugud-gul durbatuluk agh burzum-ishi krimpatul.
Why settle for the lesser evil?	 https://secure.isc.org/store/t-shirt/
-- 
David W. Hankins	"If you don't do it right the first time,
Software Engineer		     you'll just have to do it again."
Internet Systems Consortium, Inc.		-- Jack T. Hankins

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