TITLE
    Mac OS X Public Beta: NetProbe DNS Lookup Fails
Article ID:
Created:
Modified: 		106055
11/2/00
11/2/00
TOPIC

    The NetProbe application included with Mac OS X Public Beta fails to complete a DNS Lookup when used in certain configurations.

DISCUSSION

    Symptom

    When you attempt to look up an Internet host with NetProbe, it gives you this result:
      Server: localhost
      Address: 0.0.0.0
    Products affected
    • Mac OS X Public Beta

    Solution

    This issue occurs for one or more of these reasons:
    • Incorrect or missing DNS (name server) information
    • DNS server not responding
    • Your computer's TCP/IP Configure menu is set to Manually, Using BootP, or No Connection.

    If DNS services work normally outside of NetProbe, then use this workaround:
      1. Open NetProbe.
      2. Choose Ping from the pop-up menu.
      3. Type the hostname you want to look up into the Computer field.
      4. Click Start.
      5. After the first line or two of response appears, click Stop.

    The first line of Ping response will contain the host's IP address. For example:
      PING www.apple.com (17.254.0.91): 56 data bytes

    Your Network preferences must not be set to No Connection if you wish to use NetProbe or any other TCP/IP application.

    If you don't know your computer's TCP/IP settings or how to check for DNS function, follow the steps below.

    How to check your DNS settings:
      1. Open System Preferences.
      2. Click Network.
      3. Click the DNS tab.
      4. Look to see if the proper DNS settings for your network or Internet service provider appear here.

    How to check your IP address settings:
      1. Open System Preferences.
      2. Click Network.
      3. Click the TCP/IP tab.
      4. From the Show pop-up menu, choose TCP/IP.
      5. Click the name of active network interface.
      6. Look at the Configure pop-up menu to see how it is set.

    Checking for DNS availability
      1. Open a web browser, such as Netscape Communicator or Microsoft Internet Explorer.
      2. Go to a Web site that has a clock on the front page, such as www.apple.com.
      3. Click the refresh button in your web browser's toolbar.
      4. Check for the correct time. This ensures that you are not viewing cached content.

    If this test fails, then check that your Network preferences are correct for your Internet service provider or network. Make sure that the physical connection to the Internet has not been broken.

Document Information
Product Area: Mac OS System Software
Category: Mac OS X
Sub Category: General Topics
Keywords: kmosX

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