Re: NetReg: problems with DHCP - host declaration removed

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From: Chris Fabri (fabric@bohica.nsg.northwestern.edu)
Date: Fri Apr 26 2002 - 11:27:54 CDT


Yeah no problem:

shared-network netreg_test_233 {
  subnet 172.28.233.0 netmask 255.255.255.0 {
  option routers 172.28.233.1;
  }
  subnet 129.105.233.0 netmask 255.255.255.0 {
  option routers 129.105.233.1;
  }
# unknown clients get this pool.
  pool {
        option domain-name-servers 129.105.49.1;
        max-lease-time 120;
        default-lease-time 120;
        range 172.28.233.100 172.28.233.250;
        allow unknown clients;
  }
# known clients get this pool.
  pool {
        option domain-name-servers 129.105.49.1, 165.124.49.21;
        max-lease-time 7200;
        default-lease-time 7200;
        range 129.105.233.100 129.105.233.250;
        deny unknown clients;
  }
}

Apr 21 21:28:02 netreg dhcpd: [ID 702911 local5.info] DHCPREQUEST for 129.105.23
3.149 from 00:01:e6:64:4f:7c via 129.105.233.1: lease 129.105.233.149 unavailabl
e.
Apr 21 21:28:02 netreg dhcpd: [ID 702911 local5.info] DHCPNAK on 129.105.233.149
 to 00:01:e6:64:4f:7c via 129.105.233.1

This is repeated several times, until:

Apr 21 21:43:03 netreg dhcpd: [ID 702911 local5.info] DHCPDISCOVER from 00:01:e6
:64:4f:7c via 129.105.233.1
Apr 21 21:43:04 netreg dhcpd: [ID 702911 local5.info] DHCPOFFER on 172.28.233.25
0 to 00:01:e6:64:4f:7c (NPI644F7C) via 129.105.233.1

The client is Windows2000. We have 172.28.233.0/24 set up as a secondary
address on the router interface for 129.105.233.0/24. Thanks! chris

Peter Valian wrote:
>
> Chris,
>
> can we see your conf before and after and an snippet from your error
> log? what OS is the client?
>
> thanks,
> -peter
>
> Chris Fabri wrote:
> > I'm having a strange problem that I'm fairly certain is due to
> > DHCP, but haven't gotten much helpful info from that direction, so
> > I"m inquiring here.
> >
> > I'm using netreg 1.2 with dhcpv3 (that's the latest non-test, from Oct 2).
> > I've had a couple of clients, after registering with netreg, that
> > can't renew their leases. dhcp gives a "lease unavailable" error
> > and then NAKs the request. This happened the first time that these
> > clients tried to renew. After about an hour of NAKs, the client does
> > a new DHCPDISCOVER, at which point it's given a lease from the unknown
> > client range. This means at some point the host declaration has been
> > removed, and i know i didn't do it. :)
> >
> > So I'm trying to see if anybody else has seen this behavior (didn't
> > see anything in the archives). According to the DHCP folks, this
> > problem was fixed in DHCP3.0.1rc8, but there are other problems with
> > it, so that's no good for a production system.
> >
> > And I"m using the refresh-dhcpdconf.pl contributed by Steve Hideg,
> > which doesn't appear to have the capability of making this type
> > of change.
> >
> > TIA. chris
>
>
>
> --
> Peter Valian
> Network & Systems Administrator
> Southwestern University
> Georgetown, Texas
> 512.863.1586 office
> 512.863.1605 fax
> --
>
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>

-- 
 _________________________ __________________________________________
| Chris Fabri             |  Northwestern University                 |
| fabric@northwestern.edu |  Telecommunications and Network Services |
| 847-467-2539            |  http://www.ittns.northwestern.edu       |
|_________________________|__________________________________________|
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