no Working leases on persistant database

stephane lepain s.lepain at
Tue Jan 15 14:02:06 UTC 2008

Just to make, 

Wouldn't adding this host declaration be better in order to prevent the
DHCP Client receiving DHCP Service ? and thus avoiding the error message
I go earlier?

host router-server {
 hardware ethernet xx:xx:xx:xx:xx:xx;
 deny booting; 

Le mardi 15 janvier 2008 à 14:52 +0100, stephane lepain a écrit :
> Jeffrey, 
> Thank you so much for your response. 
> I have now configured my DHCP server which has two nics in static. Both
> of them. The result is much better and the error message is gone. In
> fact that error message was (I think) coming from the server itself as
> it was trying to offer a lease to the wifi network card in the server.
> By putting my two ethernet nics is static in the server and
> reconfiguring the dhcdbd I solved that problem. On the top of that I
> have added a line to my dhcpd.conf file "dhcpd if1" The result is great
> but now my server keeps telling that it has no wired network which in
> fact is completly wrong because all network is working fine. I have my
> permanent clients on my network which are working fine and as well the
> nomads one which allocted dynamic addresses for. 
> Any idea on why my server persist in telling me that I have no wired
> network? That happened just after i put my two nics on my server in
> statics. 
> Le lundi 14 janvier 2008 à 18:47 -0500, Jeffrey Hutzelman a écrit :
> > --On Tuesday, January 15, 2008 12:30:50 AM +0100 stephane lepain 
> > <s.lepain at> wrote:
> > 
> > > Hi Guys,
> > >
> > > I am new to DHCP. I have just set up my dhcp server on my network and
> > > when I start up my dhcp server, I get this error message  "no working
> > > leases on persistent database". I dont understand that message because
> > > the server is actually working fine. The problem is that it takes for
> > > ever for the sever to start itself because of that message.
> > 
> > That message is one printed by the DHCP _client_, not the server.  It 
> > indicates that the client doesn't have any existing unexpired leases to 
> > fall back on after having failed to get a response from any DHCP server. 
> > The more interesting message is the one you should have seen a line or two 
> > above, "No DHCPOFFERS received.", which indicates that your client did not 
> > receive offers from any server.
> > 
> > Usually this happens when you are not connected to the network, are not 
> > eligible to receive a lease, or when the DHCP server is in fact _not_ 
> > working fine.  You can often determine more by looking at the DHCP server 
> > log and/or a packet trace.
> > 
> > Since in this case you say you are getting this message when you "start up 
> > your DHCP server", I assume you mean when you try to boot the machine on 
> > which the DHCP server runs.  If that machine is configured to use DHCP to 
> > obtain its address, then this is not surprising -- at the time the network 
> > starts, the DHCP server is not yet running, and so cannot provide an 
> > address to the machine it runs on.
> > 
> > Generally, the machine on which a DHCP server runs should be one of the few 
> > machines on your network which does _not_ use DHCP to obtain its 
> > configuration.  In most cases, such machines must be statically configured.
> > 
> > -- Jeffrey T. Hutzelman (N3NHS) <jhutz+ at>
> >    Carnegie Mellon University - Pittsburgh, PA
> > 
> > 
> > 

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