Member Avatar for Shams1

Hi, I'm using the following Linksys wireless adapter and the Router+adsl: Dual Band Wireless - N USB WUSB600N and Wireless -N ADSL2 +Gateway WA&160N.

Each time that I log on I get the follwing error in my System Event Viewer:

Event Type: Error
Event Source: Dhcp
Event Category: None
Event ID: 1002
Date: 8/26/2009
Time: 11:21:25 AM
User: N/A
Computer: FAMILYROOM
Description:
The IP address lease for the Network Card with network address 001EE5E4EE69 has been denied by the DHCP server (The DHCP Server sent a DHCPNACK message).

I shall be grateful if someone from the network group could could help me to resole this unpleasant error.

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Dani AI

Generated

Brief expert summary and likely cause: the logged DHCP client error (a DHCPNACK) means the DHCP server refused the requested lease — the protocol uses NAKs when the server believes the requested address or parameters are invalid (duplicate, owned by another binding, or outside the server's scope). (rfc-editor.org) This fits the flow in the thread: and suggested a lease refresh (which was attempted), flagged ICS-related conflicts, and suggested checking router address/pool — all relevant lines to follow next.

Why the ipnathlp (Event 31008) appeared: that event comes from the Windows NAT/DNS-proxy helper (part of Internet Connection Sharing); it reports it cannot read the local DNS-server list or its ICS/NAT state is corrupted. Troubleshooting ICS dependencies and system files is appropriate (SFC, service dependencies), and stopping/disabling ICS/SharedAccess when ICS is not intentionally used often removes the symptom. (learn.microsoft.com)

Practical, prioritized checklist (start here):

  1. Power-cycle the router to clear its lease table and then inspect the router’s DHCP lease/reservation list for any reservation or duplicate mapping that conflicts with the client. (techtarget.com)
  2. On the Windows machine, check for ICS/NAT: open services.msc, stop/disable Internet Connection Sharing (SharedAccess) unless it is intentionally in use, and verify the Windows Firewall and ICS dependency services are healthy. Also temporarily disable virtual-network adapters and VPN/host-only interfaces (VMware, VirtualBox, Hamachi) that can create alternate DHCP/NAT behavior. (learn.microsoft.com)
  3. If network access is still failing, give the client a temporary static address outside the router’s DHCP pool to regain connectivity, then capture DHCP traffic (Wireshark/tcpdump or an nmap dhcp-discover) to see which device is sending the DHCPNAK — that directly identifies rogue DHCP or misconfigured hosts. (techtarget.com)

Notes: changing the router’s DHCP pool or LAN address (as suggested) is a reasonable follow-up once the conflicting host is identified; firmware updates or a router factory reset can also clear persistent lease/reservation corruption.

Recommended Answers

All 7 Replies

Member Avatar for gc_don

open command prompt and type ipconfig /release, then type ipconfig /renew.

Member Avatar for Member #579261

Have you tried to release and renew your ip add? mybe that can help...

Member Avatar for Shams1

open command prompt and type ipconfig /release, then type ipconfig /renew.

After doing that, regretfully, now in addition to the first System error mentioned, I get a second system error as below:

"Event Type: Error
Event Source: ipnathlp
Event Category: None
Event ID: 31008
Date: 8/26/2009
Time: 8:04:24 PM
User: N/A
Computer: FAMILYROOM
Description:
The DNS proxy agent was unable to read the local list of name-resolution servers from the registry. The data is the error code."

just don't know what to do!

Member Avatar for newb-networker

this link may be of use to you.

it seems that when 2 or more PC's are internet sharing (ie using one as a gateway onto the www) a conflict arises, here are some fixes.

hope this helps you out.

Member Avatar for Shams1

this link may be of use to you.

it seems that when 2 or more PC's are internet sharing (ie using one as a gateway onto the www) a conflict arises, here are some fixes.

hope this helps you out.

Thank you, it was a knowledgeable information. But didn't provide any solution. Bedsides, I am a single home wireless user with no sharing.

Member Avatar for hughv

It looks to me as though the two devices are using identical IP addresses, which is a no-no. ( is the same as )
Change the default address of the router.

Member Avatar for Shams1

It looks to me as though the two devices are using identical IP addresses, which is a no-no. ( is the same as )
Change the default address of the router.

I checked the Routers general setup page and the followings are there:

Local IP address:
Starting IP address:

So which one do you want me to change?

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