Strange ipconfig /all result

[CondorMan]

Hi everyone

I have XP Pro SP2 and have a single laptop behind a router attached to ADSL. I just checked ipconfig /all and I was surprised by some of the entries and the format. Immediately prior to this, I had typed arp -a. I don't know if this is relevant.

The physical addresses are as expected (such as 14-0C-18-DD-74-81) but the IP addresses are given in this format:

fa84::32b:22da:ba0c:d4a0%4

and the DNS servers in this format:

192.168.0.1
fbb0:0:0:ffff::1%1
fbb0:0:0:ffff::2%1
fbb0:0:0:ffff::3%1

In addition, I found:

Tunnel adapter Teredo Tunneling Pseudo-Interface:

and

Tunnel adapter Automatic Tunneling Pseudo-Interface:

I have several questions:

1. Why are the IP addresses in this format rather than the familar aaa.bbb.ccc.ddd? How can I change the format back?

2. Similarly, why the odd format for the DNS servers?

3. What are the Tunnel adapter Teredo Tunneling Pseudo-Interface and Tunnel adapter Automatic Tunneling Pseudo-Interface? I haven't installed these! I have both Wireless Network and Ethernet connections so I appreciate their display with ipconfig /all.

Finally, I've changed the actual IP addresses and physical addresses that I've listed in this posting to protect my privacy. The format that I've given is as shown to me by ipconfig /all.

I'm confused!

Thanks for your time (and patience).

 

[Turkbear]

Hi,
Those Tunnel entries are part of IPv6, apparently:

http://www.microsoft.com/windowsserver2003/techinfo/overview/ipv6faq.mspx

SP2 installs them






To Paraphrase:"The Help you get is proportional to the Help you give.."

 

[Jasen]

Your ISP uses IPv6 apparently. You're seeing the IPv6 addresses. That's what the Teredo Tunneling is for. It's connecting your v6 setup to the v4 internet.

 

[CondorMan]

Thanks for the rapid responses.

Any idea why they've suddenly apppeared? So far as I recall, I looked at ipconfig /all about a month ago and everything was "familiar". Is it something that I've done, is it due to a Windows Update or is it something that my ISP has done? If it's the latter, I haven't had any sort of notification from them (Demon).