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 From:  =?iso-8859-1?Q?S=F8ren_Vanggaard_Jensen?= <svanggaard at hotmail dot com>
 To:  <apiasecki at midatlanticbb dot com>, "'Wilko Lunenburg'" <wilko at sassenheim dot net>
 Cc:  "'m0n0wall'" <m0n0wall at lists dot m0n0 dot ch>
 Subject:  RE: [Fwd: Re: [m0n0wall] DHCPDECLINE]
 Date:  Sat, 28 Mar 2009 18:07:47 +0100
The 928233 KB article regards the DHCP BRODCAST flag. I've patched
dhcpd.conf with "always-broadcast on" to circumvent this issue. Also i
beleive, that VISTA SP1 fixes this problem.  

I've put a lot of effort into the DHCPDECLINE issue, but I've not been able
to find any pattern with regards to vista version/ServicePack. At one point
i believed, that the problem was only related to 64-bit VISTA - but that's
not the case. Both 32 and 64 bit VISTA machines are affected. At the moment
i'm suspecting, that the VISTA build has something to do with the problem.



-----Original Message-----
From: apiasecki at midatlanticbb dot com [mailto:apiasecki at midatlanticbb dot com] 
Sent: 28. marts 2009 18:36
To: Wilko Lunenburg
Cc: m0n0wall
Subject: Re: [Fwd: Re: [m0n0wall] DHCPDECLINE]

Yes i've seen this also, and would make sense if all Vista Clients behaved
this way, but this is not the case. Some work and some don't.. 
I'm thinking it could be a service pack/windows patch issue. Maybe Microsoft
fixed something and unpatched machines are still not working.


Wilko Lunenburg wrote:
> Hi,
> Have you tried to find it with Microsoft's knowledge base? I found 
> this, maybe it is of any help to you:
> Windows Vista cannot obtain an IP address from certain routers or from 
> certain non-Microsoft DHCP servers
> http://support.microsoft.com/kb/928233/en-us
> Søren Vanggaard Jensen schreef:
>> I haven't been able to determine who own's the macaddress 
>> bc:95:81:00:00:0f.
>> This is work in progress and i hope I'll  have an answer soon.
>> However, i do not see why bc:95:81:00:00:0f should cause Vista to 
>> decline the offered IP address. VISTA should only decline the IP 
>> address if it detects an IP address conflict.
>> BR
>> /Søren
>> -----Original Message-----
>> From: Claus@Monowall [mailto:Monowall at mail dash fwd dot archie dot dk] Sent: 28. 
>> marts 2009 11:27
>> To: apiasecki at midatlanticbb dot com
>> Cc: m0n0wall at lists dot m0n0 dot ch; m0n0wall at lists dot m0n0 dot ch
>> Subject: RE: [m0n0wall] DHCPDECLINE
>> Why is the failing ARP
>>> No.     Time            Source                Destination
>> Protocol
>>> Info
>>>      38 15:31:12.537248 bc:95:81:00:00:0f     Broadcast             ARP
>>> Who has  Tell
>>> Frame 38 (60 bytes on wire, 60 bytes captured) Ethernet II, Src: 
>>> bc:95:81:00:00:0f (bc:95:81:00:00:0f), Dst: Broadcast
>>> (ff:ff:ff:ff:ff:ff)
>>> Address Resolution Protocol (request)
>> Saying
>> Tell
>> Why not
>> Tell real ip of bc:95:81:00:00:0f
>> Who is bc:95:81:00:00:0f ? First time I see it is in the failing ARPs ??
>> Claus
>> -----Original Message-----
>> From: apiasecki at midatlanticbb dot com 
>> [mailto:apiasecki at midatlanticbb dot com]
>> Posted At: Saturday, March 28, 2009 10:14 AM Posted To: Monowall
>> Conversation: [m0n0wall] DHCPDECLINE
>> Subject: Re: [m0n0wall] DHCPDECLINE
>> I have this same problem. On the same connection Windows XP will grab 
>> DHCP just fine but Vista won't. I haven't figure it out either. It's 
>> only Vista machines that are having this problem, all other OS's work 
>> fine. Its strange because some vista machines will work fine, while 
>> others won't.
>> Usually i just tell the guest the call Microsoft's and explain that 
>> windows XP machines are working fine on the network and Vista isn't.
>> Adam

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