Clients not requesting address

[Wolfgang Zweimueller]

Dear List!

I have a weird situation where PXE-clients most of the time do not
request an offered IP-address. Maybe one can give a hint where or how
to search.

My setup: we run a failover system on two RedHat server with 4.1.1 for
a lot of /24 nets. Some of them are dynamic only and some are fixed
addresses only. (I have never deleted the lease-file ;-)

For PXE there is another server which offers the PXE-specific boot
info. This is done via forwarder config on the router.


Here's an example where a client gets an address at first attempt and
after reboot it does not request the offer:

Sep  1 13:46:28 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:28 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:28 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:28 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:28 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:28 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:28 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:28 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPREQUEST for 192.168.102.152 (192.168.102.179) from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPACK on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPREQUEST for 192.168.102.152 (192.168.102.179) from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPACK on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPREQUEST for 192.168.102.152 (192.168.102.179) from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPACK on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPREQUEST for 192.168.102.152 (192.168.102.179) from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: DHCPACK on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:30 u1ru169 dhcpd: bind update on 192.168.11.49 from lkh rejected: incoming update is less critical than outgoing update
Sep  1 13:46:42 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:42 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:42 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:42 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:42 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:42 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:42 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:42 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:44 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:48 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:48 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:48 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:48 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:48 u1ru169 dhcpd: DHCPDISCOVER from 00:1e:0b:64:37:39 via eth0
Sep  1 13:46:48 u1ru169 dhcpd: DHCPOFFER on 192.168.102.152 to 00:1e:0b:64:37:39 via eth0



The corresponding config for this host is:

,----
| subnet 192.168.102.0 netmask 255.255.255.0 {
| pool {
|         failover peer "lkh";
|         range 192.168.102.0 192.168.102.0;
|         option routers 192.168.102.242;
|         option domain-name "kliniken.lks.local";
|         option domain-search "lksdom21.lks.local", "kliniken.lks.local";
| 
|         host C1SV119 {
|                 hardware ethernet 00:1E:0B:64:37:39;
|                 fixed-address 192.168.102.152;
|                 option host-name "C1SV119";
|         }
| }
| }
`----



Many thx in advance,
Wolfgang