[CALUG] Booting back to Linux

[jecottrell3 at comcast.net]

No. Any DHCP *should* see the box as The Same Client. Hosts frequently crash and are given the same address, especially if the Lease is Active.

The other possibility is that the Windows Client and the Linux Client look different. A popular misconception is that DHCP looks at the MAC Address. In reality, it looks at the Client ID, which can be anything from a Host Name to a Random Number, but if not given, it Defaults to the MAC.

Therefore, check to see if a hostname is being specified on either client, and check the Logs to see what the DHCP Server is seeing.

Certain Routers make very poor DHCP Servers. Windows Servers are OK, but you probably have to play their game. Linux DHCP is more flexible, but it may take you awhile to find the right options.

On Linux, do a man on dhclient and see if there is a file that lists your hostname.

A packet trace may have to be done.

JIM

----- Original Message -----
From: "Miguel González Castaños" <miguel_3_gonzalez at yahoo.es>
To: "calug at unknownlamer.org >> CALUG" <calug at unknownlamer.org>
Sent: Saturday, November 24, 2012 7:28:32 AM
Subject: Re: [CALUG] Booting back to Linux



On 24/11/2012 00:22, Bryan J Smith wrote: 




My apologies then, I must have read another response. 

I'm going to see what NT6.2 is up to with DHCP DDNS UPnP 
On Nov 23, 2012 2:50 PM, "Rajiv Gunja" < opn.src.rocks at gmail.com > wrote: 


I am not assigning different IP-addresses, I use DHCP reservation, irrespective of the OS, I always get the same IP-address for a given MAC address. I have done this reservation for all my devices both on ethernet and wifi network. If you are using the same IP address for Linux and Windows 8, that might be the issue as someone has already pointed out that the DHCP client in Windows 8 might not be understanding the leases that have been given to the linux box. 

I'd either spoof the MAC in linux or assign a static IP address and eliminate that IP address from the dynamic pool. 

It's not elegant, but feasible 

Miguel 

_______________________________________________
CALUG mailing list
CALUG at unknownlamer.org
http://lists.unknownlamer.org/listinfo/calug