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Am attempting to connect a Windows 7 laptop to a Debian server running dnsmasq. The Windows 7 machine doesn't seem to like the DHCP info it's getting as it re-requests it every ~10 seconds.
The log file on the Debian machine is filling up with repeated 'DHCPREQUEST' and 'DHCPACK' messages. Interspersed with these messages are 'DHCPINFORM' about once a minute.
I've tried adding the DHCP-OPTION=252,"\n" line as indicated on several sites but this doesn't seem to help as the Windows 7 machine isn't holding onto the address long enough to need this secondary fix. The Windows 7 machine is able to accept/use DHCP addresses from other servers without any problem. The issue is localized to this one machine.
The dnsmasq.conf from the server:
interface=wlan0
dhcp-range=192.168.70.10,192.168.70.200,24h
dhcp-option=252,"\n"
Clearly I've missed some crucial step but I'm not sure where to look.
EDIT: Win7 keeps the same address but it isn't usable. It refreshes too often to get a usable request through. Other machines (and phones) can't use addresses from this server either.
EDIT: Interesting - setting a static IP on this address (on the win7 machine) still doesn't provide a working connection through this wireless interface.
ethrbunny
Posted 2014-11-17T14:38:09.823
Reputation: 347
Does the win7 keep and use the address it gets? Do other stations accept the ip from DHCP without a problem? Or is this a one on one situation? Have you tried tcpdump to look more closely at the packets? Did you try putting isc-dpchd into debug mode? – Timbo – 2014-11-17T14:56:00.510