ISC DHCP server always ACKs DHCPREQUESTs without checking the server identier
Jordan Gordeev
jgordeev at dir.bg
Fri Feb 23 13:05:08 UTC 2007
Glenn Satchell wrote:
>>X-Original-To: dhcp-users at webster.isc.org
>>X-Greylist: delayed 3599 seconds by postgrey-1.27 at post.isc.org; Fri, 23 Feb
>>
>>
>2007 12:51:48 UTC
>
>
>>Date: Fri, 23 Feb 2007 13:50:02 +0200
>>From: Jordan Gordeev <jgordeev at dir.bg>
>>To: dhcp-users at isc.org
>>Subject: ISC DHCP server always ACKs DHCPREQUESTs without checking the server
>>
>>
>identier
>
>
>>X-archive-position: 2922
>>X-ecartis-version: Ecartis v1.0.0
>>X-original-sender: jgordeev at dir.bg
>>List-software: Ecartis version 1.0.0
>>X-List-ID: <dhcp-users.isc.org>
>>X-list: dhcp-users
>>
>>I am using the ISC DHCP server version 3.0.5. Most of the DHCP clients
>>on my network have host declarations with fixed adresses. I have noticed
>>that the server sends DHCPACK messages to clients requesting (via
>>DHCPREQUEST) leases from other DHCP server. I have looked at the source
>>code and have noticed that the server identier in DHCPREQUEST messages
>>is not used. I'm wondering why the server behaves like that.
>>
>>
>>
>If you run failover, then both servers know about each other's leases.
>
>regards,
>-glenn
>
>
>
I'm not using failover. I'd really like to know the reason for ACKing
REQUESTs for other servers.
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