[lug] dhcpcd lease issue
John Hernandez
John.Hernandez at noaa.gov
Tue Aug 20 14:51:51 MDT 2002
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|>>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
It looks like the DHCP server is getting flooded with DISCOVER messages
from that same MAC address. Are there subinterfaces on the client that
are also requesting DHCP addresses?
Could there be boxes on the network that have statically assigned
(stolen) addresses out of the DHCP pool?
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.
|
|
| 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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|>>
|>
|>
|>
|>_______________________________________________
|>Web Page: http://lug.boulder.co.us
|>Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
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|>
|
|
| _______________________________________________
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- --
~ - John Hernandez - Network Engineer - 303-497-6392 -
~ | National Oceanic and Atmospheric Administration |
~ | Mailstop R/OM62. 325 Broadway, Boulder, CO 80305 |
~ ----------------------------------------------------
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