DHCPDECLINE messages question

Kirsten Petersen kirsten.petersen at oregonstate.edu
Fri Sep 29 22:21:59 UTC 2006


I believe the DECLINE messages happen when there is another host on the 
network already using that IP - a hard-coded host.

________________
Kirsten Petersen
Network Services * Oregon State University
http://oregonstate.edu/net * irc.oregonstate.edu #osu-is
"If you're not learning, you're not living."

On Fri, 29 Sep 2006, Dennis Dufford wrote:

> Ran into a new problem.  A client has complained that the dhcp server "changed" his IP.  When checking the log, this is what I find:
>
> Sep 18 02:13:31 hw1ns2 dhcpd: [ID 702911 local7.info] Added new forward map from AMOOREXP.hw.syniverse.com. to 172.28.41.179
>
> Sep 18 02:13:31 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPREQUEST for 172.28.41.179 from 00:11:43:42:b7:b2 (AMOOREXP) via dmfe0
>
> Sep 18 02:13:31 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPACK on 172.28.41.179 to 00:11:43:42:b7:b2 (AMOOREXP) via dmfe0
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] Added new forward map from AMOOREXP.hw.syniverse.com. to 172.28.41.179
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPREQUEST for 172.28.41.179 (172.28.198.20) from 00:11:43:42:b7:b2 (AMOOREXP) via 172.28.41.12
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPACK on 172.28.41.179 to 00:11:43:42:b7:b2 (AMOOREXP) via 172.28.41.12
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] Added new forward map from AMOOREXP.hw.syniverse.com. to 172.28.41.179
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPREQUEST for 172.28.41.179 (172.28.198.20) from 00:11:43:42:b7:b2 (AMOOREXP) via 172.28.41.11
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPACK on 172.28.41.179 to 00:11:43:42:b7:b2 (AMOOREXP) via 172.28.41.11
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.error] Abandoning IP address 172.28.41.179: declined.
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPDECLINE of 172.28.41.179 from 00:11:43:42:b7:b2 (AMOOREXP) via 172.28.41.12: not found
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.error] Abandoning IP address 172.28.41.179: declined.
>
> Sep 18 12:46:48 hw1ns2 dhcpd: [ID 702911 local7.info] DHCPDECLINE of 172.28.41.179 from 00:11:43:42:b7:b2 (AMOOREXP) via 172.28.41.11: not found
>
>
>
>
>
> In checking my logs for the last nine days, about 2,500,000 entries, I found only the above two DHCPDECLINE entries - toatal.  Does anyone have any idea why a WindowsXP box would just up and:
>
> A)  do two cycles of DHCPREQUEST & DHCPACK, and then:
>
> B)  do another DHCPREQUEST and then DHCPDECLINE the same IP?
>
>
>
>


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