dhcp server issues its own address

S Kalyanasundaram skalyanasundaram at novell.com
Fri Apr 13 11:15:25 UTC 2007


Hi all,
I have got something buggy. I don't know whats wrong.
I had my configuration file as simply

ddns-update-style none;
subnet 164.99.155.0 netmask 255.255.255.0 {
 range 164.99.155.23 164.99.155.23;
}

This IP is belong to the machine where the dhcp server is running and i started the "dhcpcd" from another machine. Both are isolated machines and connected together.

I have got the following logs from the server.

DHCPREQUEST for 164.99.155.24 from 00:03:47:1f:3d:e2 via eth0: unknown lease 164.99.155.24.
DHCPREQUEST for 164.99.155.24 from 00:03:47:1f:3d:e2 via eth0: unknown lease 164.99.155.24.

DHCPDISCOVER from 00:03:47:1f:3d:e2 via eth0
ICMP Echo reply while lease 164.99.155.23 valid.
Abandoning IP address 164.99.155.23: pinged before offer
Reclaiming abandoned lease 164.99.155.23.
DHCPDISCOVER from 00:03:47:1f:3d:e2 via eth0
DHCPOFFER on 164.99.155.23 to 00:03:47:1f:3d:e2 via eth0
DHCPREQUEST for 164.99.155.23 (164.99.155.223) from 00:03:47:1f:3d:e2 via eth0
DHCPACK on 164.99.155.23 to 00:03:47:1f:3d:e2 via eth0

I am wondering how the dhcp server can issue its own address to the client. It first said abandoning and reclaiming and after that it issued. I am using dhcp v3.0.3. Now the client also shows the IP same as which dhcp server's machine has.

Is there anything to do with client so that he sends NACK to server to abandon again?

thanks in advance, 
  -Kalyan




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