I have a problem with a VPN Client program where address I enter seems to
get cached.  Using a Windows XP program.

I enter something like:

ping www.fts.com

and get an address of something like:

67.100.12.15.

I then fire up my VPN program which will make my machine look like it is on
the local network.  At that point, if I type in the same ping statment, I
should get something like:

10.0.0.15.

But instead I still get 67.100.12.15.

This only happens when I do the ping before starting my VPN program.

If I reboot the machine, then everything is OK.  I assume that www.fts.com
with the IP address is cached somewhere.

If this is the case, where would it be and how do I see it and delete it?

Thanks,

Tom

ipconfig /displaydns

You can change this behavior by turning off the DNS client service.

Doug Sherman
MCSE, MCSA, MCP+I, MVP

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After you mentioned it, I looked and found that you can clear the cache by
doing: ipconfig /flushdns.

Thanks,

Tom
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Yes - you can clear the cache with ipconfig /flushdns, or you can turn off
client side caching altogether by stopping the DNS client service.

Doug Sherman
MCSE, MCSA, MCP+I, MVP


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All makes sense.

I played with this quite a bit and found that if I turned off the cache
service, it goes out to the outside DNS servers each time.  I did find an
interesting thing when I tried to ping various Names, such as www.yahoo.com.
I got a list of servers and then each one in the list has its own display:
**********************************************
   www.yahoo.com.
   ------------------------------------------------------
     Record Name . . . . . : www.yahoo.com
     Record Type . . . . . : 5
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Answer
     CNAME Record  . . . . :
                       www.yahoo.akadns.net

     Record Name . . . . . : www.yahoo.akadns.net
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Answer
     A (Host) Record . . . :
                       209.131.36.158

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       zc.akadns.org

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       zd.akadns.org

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       eur4.akadns.net

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       eur8.akadns.net

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       usw5.akadns.net

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       asia4.akadns.net

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       asia9.akadns.net

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       za.akadns.org

     Record Name . . . . . : akadns.net
     Record Type . . . . . : 2
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Authority
     NS Record   . . . . . :
                       zb.akadns.org

     Record Name . . . . . : za.akadns.org
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       81.52.250.134

     Record Name . . . . . : zb.akadns.org
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       206.132.100.105

     Record Name . . . . . : zc.akadns.org
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       69.45.78.3

     Record Name . . . . . : zd.akadns.org
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       65.203.234.28

     Record Name . . . . . : eur4.akadns.net
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       195.219.3.169

     Record Name . . . . . : eur8.akadns.net
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       62.4.69.96

     Record Name . . . . . : usw5.akadns.net
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       63.241.73.200

     Record Name . . . . . : asia4.akadns.net
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       61.213.147.96

     Record Name . . . . . : asia9.akadns.net
     Record Type . . . . . : 1
     Time To Live  . . . . : 22
     Data Length . . . . . : 4
     Section . . . . . . . : Additional
     A (Host) Record . . . :
                       220.73.220.4


   eur8.akadns.net.
   ------------------------------------------------------
     Record Name . . . . . : eur8.akadns.net
     Record Type . . . . . : 1
     Time To Live  . . . . : 13526
     Data Length . . . . . : 4
     Section . . . . . . . : Answer
     A (Host) Record . . . :
                       62.4.69.96


   za.akadns.org.
   ------------------------------------------------------
     Record Name . . . . . : za.akadns.org
     Record Type . . . . . : 1
     Time To Live  . . . . : 3298
     Data Length . . . . . : 4
     Section . . . . . . . : Answer
     A (Host) Record . . . :
                       81.52.250.134
....
************************************************

Why  is it going to all these servers and why is it caching all of them if
it only needs the top couple?

My ping got me:

Pinging www.yahoo.akadns.net [209.131.36.158] with 32 bytes of data:

which is the top record in my list that points to the 2nd one.

Not quite sure why.

Thanks,

Tom
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