dhcp issue

Gbenga Shobowale gshobowale at gmail.com
Mon Sep 4 09:15:56 UTC 2006


On 9/2/06, Tod Merley <todbot88 at gmail.com> wrote:
> On 9/2/06, Gbenga Shobowale <gshobowale at gmail.com> wrote:
> > Hi all,
> > I just upgrade to FC5 before then I had 2 NIC in one with static IP
> > and other on DHCP, however after the upgrade my machine can't seem to
> > up up an IP from the modem...I Check the card its configured properly
> > and the one with a static IP works fine...I put the link on a windows
> > machine and it work..hence I think FC is having a problem with
> > DHCP..any ideas anyone?
> >
> > Thanks
> >
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>
> Hi Gbenga Shobowale!
>
> My first thought is that your DHCP client is not looking at the eth1
> interface.  It shows a few packets recieved apparently less than half
> responded to.  Probably being queried by the server but with no DHCP
> client looking not responded to.
>
> Here is how to look arround a bit - -
Thanks Tod...
I did look around but I was under pressure to get the machine up and
running within 4 hours...I looked at the client and everything seems
fine..
Anyway I took a drastic measures of reinstalling the machine also
there was another issue of not getting the login page not working...
I wished I had more time.... but all the same thanks for all your help..


>
> At the moment (I am working on it right now) I do not have an FC5 box
> in the house so perhaps the way I found where some things are will be
> of help:
>
> As root do an "updatedb".  This may take some time, all files are
> being catalogued.
>
> Then look for 'dhclient.conf":
>
> tod at tod-desktop:/var/lib/dhcp3$ locate dhclient.conf
> /etc/dhcp3/dhclient.conf
> /usr/share/man/ja/man5/dhclient.conf.5.gz
> /usr/share/man/man5/dhclient.conf.5.gz
> tod at tod-desktop:/var/lib/dhcp3$
>
> Note the man page available for dhclient.conf!!
>
> Now lets find the leases:
>
> tod at tod-desktop:/etc/dhcp3$ locate leases
> /var/lib/dhcp3/dhclient.leases
> /var/lib/dhcp3/dhclient.eth1.leases
> /var/lib/dhcp3/dhclient.eth2.leases
> /var/lib/dhcp3/dhclient.ath0.leases
> /var/lib/dhcp3/dhclient.wlan0.leases
> /var/lib/dhcp3/dhclient.eth0.leases
> /usr/share/doc/imagemagick/www/binary-releases.html
> /usr/share/man/ja/man5/dhclient.leases.5.gz
> /usr/share/man/man5/dhclient.leases.5.gz
> tod at tod-desktop:/etc/dhcp3$ /var/lib/dhcp3/
>
> Running "cat" (print to screen) on all of the above showed them blank
> (due to a nasty IPv6-dns problem I run static).  So for you I used
> Ubuntu's System > Administration > Networking tool to set eth0 to use
> DHCP.  I also used "sudo vi /etc/resolv.conf" (sudo obtains root
> priviledges for what comes after) to edit out my local DSL modem's
> nameserver (the IPv6 thing).
>
> Now a differant result (note: X's in the IP's for privacy):
>
> tod at tod-desktop:/var/lib/dhcp3$ cat dhclient.leases
> lease {
>  interface "eth0";
>  fixed-address 192.168.X.X;
>  option subnet-mask 255.255.255.0;
>  option routers 192.168.X.X;
>  option dhcp-lease-time 86400;
>  option dhcp-message-type 5;
>  option domain-name-servers 192.168.X.X,205.171.3.65;
>  option dhcp-server-identifier 192.168.X.X;
>  option domain-name "domain.actdsltmp";
>  renew 0 2006/9/3 05:30:41;
>  rebind 0 2006/9/3 14:48:15;
>  expire 0 2006/9/3 17:48:15;
> }
> tod at tod-desktop:/var/lib/dhcp3$
>
> Well, that will probably get you started.
>
> Good Hunting!
>
> Tod
>
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