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The Graveyard - Products No Longer Supported => D-Link NetDefend Firewalls => Topic started by: DeFYAnT on January 16, 2013, 01:15:28 AM

Title: DFL-800 multiple DHCP address on one MAC address
Post by: DeFYAnT on January 16, 2013, 01:15:28 AM

Hi there, my DHCP server on my DFL-800 is showing many address leases to one MAC address.  The MAC address in question belongs to my Windows Home Server.  Any reason this is happening or how I can correct it?  Thanks

Picture
(http://img17.imageshack.us/img17/1978/dfl800.jpg)

Title: Re: DFL-800 multiple DHCP address on one MAC address
Post by: danilovav on January 18, 2013, 01:24:19 PM

Looks strange...
I have no Windows Home Server, but all others OS (Windows Server/Professional/Home) never had such problem.
Try to dump traffic via Wireshark (on PC) and pcapdump (on DFL).
Also, logs from Windows are very interested - why it want to ackowledge new IP.

Title: Re: DFL-800 multiple DHCP address on one MAC address
Post by: Hard Harry on January 18, 2013, 03:20:20 PM

Do you have any virtual machines configured on the server? Seems more like a server issue then router issue.

Also found this. (http://social.microsoft.com/Forums/en-US/whssoftware/thread/4799f022-d60c-4a79-81e9-372ecadd807a)

Title: Re: DFL-800 multiple DHCP address on one MAC address
Post by: DeFYAnT on January 18, 2013, 05:28:10 PM

danilovav and hard harry, thanks for your replies.  The Windows Home Server is not acting like a DNS server, DFL-800 currently has a DNS relay setup for use with Dyn Internet Guide.  I'll give your suggestions a go and get back in a few days to see how I went.

Title: Re: DFL-800 multiple DHCP address on one MAC address
Post by: DeFYAnT on January 19, 2013, 11:22:26 PM

OK, I may have had a fix.  Disabled the DHCP client on the server, no need for a server to be assigned DHCP addresses.  Now my firewall DHCP leases only have 3 addresses, not 15.

Thanks