Append parent suffixes of the primary DNS suffix

[CitricAcid]

I am under Windows XP. I have broadband connection with 256Kb/s speed. My ISP have setup my computer with IP address and DNS as to obtain automatically. Today when I was fiddling around my network connection, I came across the "Local Area Connection Properties" under. Here under "Advanced TCP/IP Settings" window, I noticed "DNS" tab have one option enabled named "Append parent suffixes of the primary DNS suffix". Why is it like that? Why is it enabled? What is the use of this option? Please help.

[Steve123]

The "Advanced TCP/IP Settings" window allows you to configure settings related to DNS, WINS and provide multiple IP Addresses and Gateways. The DNS tab allows you to define the DNS settings for the TCP/IP connection. Don't worry about "Append primary and connection specific DNS suffixes" and "Append parent suffixes of the primary DNS suffix" because they are enabled by default. They help in the resolution of unqualified names. The first option is used to resolve unqualified names using the parent domain. The second option is used to resolve unqualified names using the parent-child domain hierarchy.

[Aleksandra]

DNS is an Internet service that translates domain names into IP addresses. On the Internet, whenever you use a domain name a DNS service needs to translate the name into the corresponding IP address. To modify the resolution behavior for unqualified DNS names

1. To resolve an unqualified name by appending the primary DNS suffix and the DNS suffix of each connection (if configured), click Append primary and connection specific DNS suffixes. If you also want to search the parent suffixes of the primary DNS suffix up to the second-level domain, click to select the Append parent suffixes of the primary DNS suffix check box.

2. To resolve an unqualified name by appending the suffixes from a list of configured suffixes, click Append these DNS suffixes (in order), and then click Add to add suffixes to the list.

3. To configure a connection-specific DNS suffix, type the DNS suffix in DNS suffix for this connection.

[Zachary]

If you select the check box "Append parent suffixes of the primary DNS suffix", the resolver performs name devolution on the primary DNS suffix. It strips off the leftmost label and tries the resulting domain name until only two labels remain. For example, if your primary DNS suffix is mfg.fareast.isp01-ext.com, and you selected the check box Append parent suffixes of the primary DNS suffix" and then queried for the unqualified, single-label name "coffee", the resolver queries in order the following FQDNs:

coffee.fareast.isp01-ext.com.

coffee.isp01-ext.com.