[lug] dhcpcd lease issue

Tue Aug 20 13:38:17 MDT 2002

Chuck Wiechman wrote:
> The dhcp server (yes the output below came from the serer) is on the same
> net with IP address 10.1.1.1, there is no firewalling on that interface.

Suppose for a moment that "abandoned" can mean nothing 
responded...regardless of whether it is firewall or just nobody 
listening/responding. Check and make sure port 68 has something listening:
/sbin/fuser -v -u -n tcp "68" -n udp "68"

It should show dhcpcd, mine is udp only.

D. Stimits, stimits AT attbi.com

> 
> 
> On Tue, 20 Aug 2002, D. Stimits wrote:
> 
> 
>>Chuck Wiechman wrote:
>>
>>>I recently upgraded my laptop from redhat 7.1 to 7.3. After the upgrade,
>>>the laptop is having issues keeping the same IP address. For some reason
>>>it keeps requesting a new IP, and giving up its old one. I am pretty sure
>>>there is nothing wrong with the dhcp server (redhat 7.2 it has been
>>>running for months just fine), and it exhibits the same behavior at work 
>>>with a debian dhcp server.
>>>
>>>The only difference that I can see is that 7.3 uses dhcpcd instead of the 
>>>pump client. I don't see any patches for dhcp on redhats page. Is this a 
>>>know bug? Should I go back to pump?
>>
>>I just installed dhcp client on my machine for cable modem, RH 7.3. I 
>>could not get pump to work, but dhcpc worked without any effort. The one 
>>thing that initially hurt was having the firewall block 
>>non-Internet-routable addresses...it turns out that AT&T uses one of 
>>those to talk via dhcp to users. The output below is from the dhcp 
>>server (I hope it isn't running on the laptop...it could be trying to 
>>serve itself), I wonder if "abandoned" can be caused by a blocked port 
>>or address? Did your upgrade change anything at all to do with firewalling?
>>
>>D. Stimits, stimits AT attbi.com
>>
>>
>>>
>>>dhcpd.leases
>>>---------------------------------------------------
>>>lease 10.1.1.51 {
>>>        starts 2 2002/08/20 17:57:00;
>>>        ends 2 2002/08/20 17:57:00;
>>>        abandoned;
>>>}
>>>lease 10.1.1.50 {
>>>        starts 2 2002/08/20 01:20:46;
>>>        ends 2 2002/08/20 01:20:48;
>>>        hardware ethernet 00:10:a4:e0:43:df;
>>>        uid 01:00:01:02:79:2d:87;
>>>}
>>>lease 10.1.1.64 {
>>>        starts 2 2002/08/20 01:19:42;
>>>        ends 2 2002/08/20 01:19:42;
>>>        abandoned;
>>>}
>>>lease 10.1.1.53 {
>>>        starts 2 2002/08/20 17:57:10;
>>>        ends 2 2002/08/20 21:57:10;
>>>        hardware ethernet 00:10:a4:e0:43:df;
>>>        uid 01:00:01:02:79:2d:87;
>>>}
>>>lease 10.1.1.53 {
>>>        starts 2 2002/08/20 17:57:11;
>>>        ends 2 2002/08/20 21:57:11;
>>>        hardware ethernet 00:10:a4:e0:43:df;
>>>        uid 01:00:01:02:79:2d:87;
>>>}
>>>
>>>
>>>
>>>Aug 20 09:56:59 firewall dhcpd: DHCPDISCOVER from 00:10:a4:e0:43:df via eth0
>>>Aug 20 09:57:00 firewall dhcpd: DHCPOFFER on 10.1.1.51 to 00:10:a4:e0:43:df via eth0
>>>Aug 20 09:57:00 firewall dhcpd: DHCPDISCOVER from 00:10:a4:e0:43:df via eth0
>>>Aug 20 09:57:00 firewall dhcpd: DHCPOFFER on 10.1.1.51 to 00:10:a4:e0:43:df via eth0
>>>Aug 20 09:57:00 firewall dhcpd: DHCPREQUEST for 10.1.1.51 from 00:10:a4:e0:43:df via eth0
>>>Aug 20 09:57:00 firewall dhcpd: DHCPACK on 10.1.1.51 to 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:00 firewall dhcpd: DHCPDISCOVER from 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:00 firewall dhcpd: DHCPDISCOVER from 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:00 firewall dhcpd: already acking lease 10.1.1.51
>>>Aug 20 11:57:00 firewall dhcpd: Abandoning IP address 10.1.1.51: pinged before offer
>>>Aug 20 11:57:08 firewall dhcpd: DHCPDISCOVER from 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:09 firewall dhcpd: DHCPOFFER on 10.1.1.52 to 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:09 firewall dhcpd: DHCPDISCOVER from 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:10 firewall dhcpd: DHCPOFFER on 10.1.1.53 to 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:10 firewall dhcpd: DHCPREQUEST for 10.1.1.53 from 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:10 firewall dhcpd: DHCPACK on 10.1.1.53 to 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:11 firewall dhcpd: DHCPREQUEST for 10.1.1.53 from 00:10:a4:e0:43:df via eth0
>>>Aug 20 11:57:11 firewall dhcpd: DHCPACK on 10.1.1.53 to 00:10:a4:e0:43:df via eth0
>>>
>>>
>>>
>>>
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>>
>>
>>
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>>
> 
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