DUN Clients Do Not Receive DNS Domain Name over RAS/RRAS

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Article ID: 200211 - View products that this article applies to.
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RAS or DUN clients are unable to resolve friendly host names. The user must define/use the fully qualified domain name (FQDN) of the resource.


The client does not have the domain name configured in its TCP/IP properties.

RAS or RRAS use Point to Point Protocol (PPP) Internet Protocol Control Protocol (IPCP), which is defined in RFC (Request for Comments) 1877 to provide name server (DNS server) and NetBIOS name server (NBNS) or WINS server IP addresses to the RAS client. RAS or RRAS do not support DHCP forwarding. Additionally, PPP-IPCP does not support this either.

When an RAS/RRAS server is configured to either use DHCP or a static pool for addresses, it follows the information found in the following article in the Microsoft Knowledge Base:
160699 Understanding DHCP IP Address Assignment for RAS Clients
Only the IP address of the primary and secondary DNS and/or NBNS WINS is negotiated with the PPP client.

More information

Future releases of Windows server operating systems will be able to pass DNS domain names to RAS clients through a DHCP inform packet after the PPP and IPCP have converged. Additional information will be available for this procedure upon the next release of Windows server.


For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
232703 How to Use DHCP to Provide RAS Clients with DHCP Options
139904 How to Configure Your DHCP Server Scope
187742 Methods of Setting DHCP Options
Cobb, S., "PPP Internet Protocol Control Protocol Extensions for Name Server Addresses", RFC 1877, Microsoft Corporation, December 1995


Article ID: 200211 - Last Review: October 26, 2013 - Revision: 3.0
Applies to
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows 95
kbnosurvey kbarchive kbprb KB200211

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