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RE: [suse-security] DHCP Problems
From: Schoenwaelder Oliver (oliver.schoenwaelderatari.com)
Date: Thu Mar 11 2004 - 01:14:14 CST
well, it looks like there are problems with your DHCP server. The 169.254/16
subnet is the MS APIPA (automatic private IP addressing) net. It provides
DHCP-configured clients the ability to assign itself an IP address if a DHCP
server is not available. APIPA doesn't provide a gateway, thus they can
communicate only with others in the same subnet (usually other MS clients).
APIPA clients will check every five minutes whether a DHCP server becomes
available. If there is one it stops the APIPA service and initiates the DHCP
lease process. So have a look at your DHCP server log files and/or client
event log for any DHCP message types (DHCPDISCOVER, DHCPOFFER, DHCPREQUEST,
DHCPACK and in your case maybe DHCPNACK, DHCPDECLINE). What happens if you
do a manual ipconfig /release and ipconfig /renew?
> -----Original Message-----
> From: Scott Wrobel [mailto:saw424xeomail.com]
> Sent: Thursday, March 11, 2004 4:14 AM
> To: suse-securitysuse.com; suse-slstd-esuse.com
> Subject: [suse-security] DHCP Problems
> i have just learned about / resurched / configured / and
> tested DHCP yesterday.
> When i started i didn't know what it was and it was not
> even installed on my computer. I installed it, read about
> it, conigured the files, and then tested it once on my test
> network with two windows comps. When i shut everything down
> at the end of the day all the computers work working exactly
> like i wanted them to. The windows computers contacted the
> linux box receaved fixed ip addresses based on hardware and
> worked fine.
> Today i start everything up and nothing is working the same
> way. the ip addresses on the windows comps are
> 169.254.150.xx when the specified range is 192.168.1.1xx the
> subnet masks are wrong and the gateways on the windows comps
> are non existant. the only thing that does work is that the
> two windows computers can see each other just fine. both
> windows computers have been instructed to talk to the linux
> box and one (win 2000 pro) says that it has done just that
> when asked with ipconfig /all, the other one is going
> somewhere totaly different for the address. they are
> supposed to go to 192.168.1.44 and the stray (win 98) is
> going to 255.255.255.255 for a DHCP server????????????
> Does anybody know what is going on???????????
> thx scott
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