fixed-address reservations not being honored

Aaron Bennett abennett at clarku.edu
Thu Sep 28 17:49:21 UTC 2006


Hi,

I've got a wierd problem.  I have a Windows XP host which received a 
lease for 10.6.65.110; later I decided I'd like to move it to a reserved 
address, 10.6.65.125.  I've added the reservation to the dhcp.conf file 
on both of the failover nodes, but it ipconfig /renew kept getting 
10.6.65.110.  So, taking an extra step, I did ipconfig /release, deleted 
the lease from both nodes leases file and did an ipconfig /renew -- 
still got 10.6.65.110.  Taking it even further, I excluded 10.6.65.110 
from the range and STILL, I keep getting 10.6.65.110!

Any thoughts?  Here's the relevant snips from the config files....

subnet 10.6.65.0 netmask 255.255.255.0 {
                authoritative;
                pool {
                        failover peer "failover" ;
                        range 10.6.65.51 10.6.65.109;
                        range 10.6.65.111 10.6.65.254;
                        option routers  10.6.65.1;
                        option domain-name-servers      140.232.1.32, 
140.232.1.33;
                        option domain-name      clarku.edu;
                        option netbios-name-servers     10.1.1.10, 
140.232.1.13;
                        option netbios-node-type        8;
                        option default-lease-time       691200;
                        deny dynamic bootp clients;
                 }
         }

host ABENNETTD600 {
        hardware ethernet 00:0f:1f:c8:91:73;
        fixed-address 10.6.65.125;
};

and /var/log/messages shows:

Sep 28 13:42:47 dhcptest1 dhcpd: DHCPREQUEST for 10.6.65.110 from 
00:0f:1f:c8:91:73 (ABENNETTD600) via eth0
Sep 28 13:42:47 dhcptest1 dhcpd: DHCPACK on 10.6.65.110 to 
00:0f:1f:c8:91:73 (ABENNETTD600) via eth0
       
how could this be?  That pool's range doesn't include the address it's 
getting, I'm confused (of course).

Best,

Aaron Bennett

-- 
Aaron Bennett
Sr. Unix Systems Administrator
Clark University ITS
abennett at clarku.edu     |     508.781.7315



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