[dhcpd] BOOTP from dynamic client and no dynamic leases

Andrew Falanga af300wsm at gmail.com
Fri Aug 8 17:25:35 UTC 2008

On Fri, Aug 8, 2008 at 10:54 AM, Chuck Swiger <cswiger at mac.com> wrote:
> Hi--
> On Aug 8, 2008, at 8:02 AM, Andrew Falanga wrote:
>> not authoritative;
> If you are in charge of the subnet range that you are using, then you should
> be setting yours to authoritative.  If there is already a DHCP server
> running as authoritative for the local subnet, you should configure your
> static IPs on it, rather than trying to set up a second one.  You could
> probably gain more information by running:

I just read through my original post for this message here and should
have made it more clear that this list wasn't among the inadequate
helps I was referencing.  I cannot tell you the number of Google
searches I've done in looking for this.

I am not authoritative on this subnet.  Originally, I had the
statement as authoritative but thought this might be my problem
(unfortunately it wasn't).  The organization I work for is
sufficiently large enough that getting requests handled for the
authoritative serves nearly takes an act of Congress.  When our team
ramps up, we change out hardware quite frequently and this (asking for
changes made to the authoritative servers) isn't feasible for us to
meet demand.  So, this solution was put in place.  Our old bootp
server worked just fine, but is now having problems (it runs for about
a day and then crashes).

>  tcpdump -s 0 -vv port bootps
> ...and look at whether the MAC addrs match what you think they should be in
> the request, and whether your server or another is replying with DHCPNAK.
>  There is fine documentation and even a mailing list for the ISC DHCPD
> available here and at <dhcp-server at isc.org>:
>  http://www.isc.org/index.pl?/sw/dhcp/authoritative.php
>  http://www.isc.org/sw/dhcp/dhcpv3-README.php#support

thank you for these two links.  I hadn't yet found them from all the
searches I'd done thus far.  Also, though I should have thought of it
myself, thanks for the pointer on using tcpdump.  I'll give that a


 A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

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