DNSSuffixSearchOrder

DNSSuffixSearchOrder specifies the suffix search order for the name resolution.

For DNS clients, you can configure a DNS domain suffix search list that extends or revises DNS search capabilities. By adding suffixes to the list, you can search for short, unqualified computer names in more than one specified DNS domain. Then, if a DNS query fails, the DNS Client service can use this list to append other name suffix endings to your original name and to repeat DNS queries to the DNS server for these alternate, fully qualified domain names.

When the suffix search list is empty or unspecified, the primary DNS suffix of the computer is appended to short, unqualified names, and a DNS query is used to resolve the resulting fully qualified domain name. If this query fails, the computer can try additional queries for alternate fully qualified domain names by appending any connection-specific DNS suffix that is configured for network connections.

When running unattended setup for a DNS client, you can configure a list of suffixes for the DNS Client to search, and a list of DNS servers to use.

However, the entries are not guaranteed to be applied in any particular order.

To ensure that the correct ordering of DNS servers, use Key in DNSServerSearchOrder and Key in DNSSuffixSearchOrder to specify the order in which each DNS server should be searched. For example,

   <DNSServerSearchOrder>
      <IpAddress wcm:action="add" wcm:keyValue="2">2001:4898:28:4:213:20ff:fe16:3e96</IpAddress>
      <IpAddress wcm:action="add" wcm:keyValue="3">173.145.1.12</IpAddress>
      <IpAddress wcm:action="add" wcm:keyValue="1">192.168.1.1</IpAddress>
   </DNSServerSearchOrder>

You can also use the Key setting under DNSSuffixSearchOrder element to ensure that suffixes are searched in a specific order. For example,

   <DNSSuffixSearchOrder>
      <DomainName wcm:action="add" wcm:keyValue="2">fabrikam.com</DomainName>
      <DomainName wcm:action="add" wcm:keyValue="3">server2.fabrikam.com</DomainName>
      <DomainName wcm:action="add" wcm:keyValue="1">server1.fabrikam.com</DomainName>    
      </DNSSuffixSearchOrder>

For both of these examples, the value for Key in DNSServerSearchOrder and Key in DNSSuffixSearchOrder indicates the order in which the DNS servers are searched. In this example, the server search order list is:

1. 192.168.1.1
2. 2001:4898:28:4:213:20ff:fe16:3e96
3. 173.145.1.12

The suffix search order is:

1. server1.fabrikam.com
2. fabrikam.com
3. server2.fabrikam.com

The value for Key in DNSServerSearchOrder and Key in DNSSuffixSearchOrder must be unique, and can be set to any alphanumeric character. If the value is numeric (contains numbers only) these will be applied to order the list of IpAddress within DNSServerSearchOrder.

Child Elements

Parent Hierarchy

Microsoft-Windows-DNS-Client | DNSSuffixSearchOrder

Valid Passes

specialize

Applies To

For the list of the supported Windows editions and architectures that this component supports, see Microsoft-Windows-DNS-Client.

XML Example

The following XML output shows a DNS domain configuration for Fabrikam.

   <DNSDomain>fabrikam.com</DNSDomain>
   <DNSSuffixSearchOrder>
      <DomainName wcm:action="add" wcm:keyValue="1">server1.fabrikam.com</DomainName>
      <DomainName wcm:action="add" wcm:keyValue="2">fabrikam.com</DomainName>
   </DNSSuffixSearchOrder>
   <UseDomainNameDevolution>true</UseDomainNameDevolution>
   <Interfaces>
      <Interface wcm:action="add">
         <Identifier>Local Area Connection</Identifier>
         <DNSDomain>fabrikam.com</DNSDomain>
         <DNSServerSearchOrder>
            <IpAddress wcm:action="add" wcm:keyValue="1">192.168.1.1</IpAddress>
            <IpAddress wcm:action="add" wcm:keyValue="2">192.168.1.2</IpAddress>
         </DNSServerSearchOrder>
         <EnableAdapterDomainNameRegistration>true</EnableAdapterDomainNameRegistration>
         <DisableDynamicUpdate>false</DisableDynamicUpdate>
      </Interface>
      <Interface wcm:action="add">
         <Identifier>Local Area Connection 2</Identifier>
         <DNSDomain>fabrikam.com</DNSDomain>
         <DNSServerSearchOrder>
            <IpAddress wcm:action="add" wcm:keyValue="1">192.168.1.1</IpAddress>
            <IpAddress wcm:action="add" wcm:keyValue="2">2001:4898:28:4:213:20ff:fe16:3e96</IpAddress>
         </DNSServerSearchOrder>
         <EnableAdapterDomainNameRegistration>true</EnableAdapterDomainNameRegistration>
        <DisableDynamicUpdate>false</DisableDynamicUpdate>
      </Interface>
   </Interfaces>

See Also

Concepts

Microsoft-Windows-DNS-Client