Microsoft KB Archive/249003

= DHCP Clients Receive Identical IP and Default Gateway Addresses =

Article ID: 249003

Article Last Modified on 2/28/2007

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APPLIES TO


 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows 98 Standard Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition

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This article was previously published under Q249003



SYMPTOMS
When you release or renew a DHCP client or when you lease an IP address during startup on a switched network, you may receive an IP address and default gateway address that are identical.

For example, if your computer is supposed to use the following IP addresses

IP address: 192.168.0.15

Default Gateway: 192.168.0.1

you may actually receive identical addresses:

IP address: 192.168.0.15

Default Gateway: 192.168.0.15



CAUSE
This issue can occur if the setting on the Auto Gateway Control or Auto Broadcast Control switch is turned on.



RESOLUTION
To resolve this issue, contact the manufacturer of your Ethernet switch.



MORE INFORMATION
If the settings on the Auto Gateway Control or Auto Broadcast Control switch are turned on, then the DHCPOFFER packet is stripped down, which changes the default gateway to the same address as the IP address.

Keywords: kbnetwork kbprb KB249003

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