Microsoft KB Archive/142684

= NetworkAddress Parameter Not Supported for a Modem =

Article ID: 142684

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q142684



SYMPTOMS
Assigning a specific media access control address with the parameter

for the modem used for a RAS connection is not supported. Every time a RAS connection is made, the assigned media access control address is set randomly.



CAUSE
There are two reasons why assigning a specific media access control address is not supported. The first reason is that a modem uses Serial.sys, and serial is not a device that NetworkAddress is relative to. The second reason is that the NetworkAddress registry override parameter is an optional value that is enforced only for Token Ring. So, if Serial.sys supported the NetworkAddress parameter, assigning a specific media access control address could be done. However, this would get more complicated with multiple serial devices in a machine. So, although a modem is a WAN device, it does not use a network device driver, which is where the optional NetworkAddress registry override parameter would be managed.

Additional query words: prodnt

Keywords: kbenv KB142684

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