I'm sure there are a lot of folks out there like me who are coming across Teredo Tunneling Pseudo-Interface for the first time...I've read on this forum enough to know basically what it is, but when it gets into the DOSspeak, beyond the basic netsh commands, I get lost. Googling and Bing'ing for information just yields a lot of puzzled posts, a few whitepapers, and little usable info--and a lot of what's out there is contradictory. I know Teredo comes into play when one is behind a home router, as I am, but I am puzzled as to why it never popped up when I was running Win 7 RC--or XP, for that matter. It makes me wonder if has appeared now because there is a way to make use of it after all, and I'd like to know how to tell. I've found the MS article on netsh, but it also says "you are running a different version of Windows and this may not apply to you" and points me to th eWindows 7 solution center--where ther is no mention of Teredo. So--how do I determine if I should try to enable this component? If I should disable it, which is best--disable in Device Manager? --disable using netsh interface teredo set state disabled or netsh in 6to4 set state disable (as found in Microsoft Answers forum) or does it matter? Is there a current FAQ somewhere that I've missed? Since its return Teredo isn't interfereing with my connection, but I don't like those yellow exclamation points and error messages in Device Manager, and I feel like I ought to do something about it. However, if I disable Teredo now, how do I know if things change somewhere down the road and it could be used? Sorry if this is a stupid thread...thanks in adbvance for your info and your patience.

also if you want to disable ipv6 completely just go to windows registry and add the following:path: hkey_local_machine\system\currentcontrolset\services\tcpipv6\parameters\add a DWORD value with the name : DisabledComponentsand double click on it and type ffffffffhope this is what u looking for or i missed the point?Kind regards,RR

Thanks for the prompt reply, Ddos_Evader...are you saying I have to do that in addition to one of the above? Or all?Also since posting, I came across this site: http://tunnelbroker.net/(I was bing'ing for info on how to tell if you have ip6 and what to do about it, and landed herewhich led me to that link) and other lists of tunnel brokers, and have no way to tell if something like that is worth a home user like me behind an ipv4 router to bother with, or whether it would just open up a whole host of problems....Windows 7 Help file makes it sound like ipv6 is the thing to have, but my ISP's router is what it is...I wouldn't have wondered about any of this if Teredo hadn't appeared with its attendant error code 10, but since it has, I want to know how to determine the right thing to do about it, make sure whatever I do is reversible later, and (hardest of all) to understand what I am doing.BTW, there is a Disabled Components value in that registry key that says 0x000000ff (255). Translation please?

ok 255 is fine!! means that ipv6 is completely disabled but i kinda followed some dude's instruction to set to a value of 0xffffffffthere was an article talking about in some suport.microsoft.com\KBXXXXforgot where it is but i remember it described every possible option such as allow only 6to4\isatap\ipv6 but i forgot the other options,cant get it off the top of my head but i can assure u (255) is fine!Kind regards,RR

It would be nice to know what Teredo Tunneling Pseudo-Interface actually is? And, is it important to enable it or completely disable it or leave it as is? I've read over at the windows 7 forum that it's better to disable it but I am not sure what it is exactly. From my understanding Teredo Tunneling Pseudo-Interface must be supported by: -your modem -your router and supported by the websites you visit (don't know the technical terms) in order for one to actually make full use of Teredo Tunneling Pseudo-Interface. Or else it's useless. Anyone who knows more can elaborate on this because I am only going on what I've researched using google.

...and that was the purpose for this thread. Nicely put, ECH1. I would like to see a detailed FAQ on Teredo with current (Windows 7) info and instructions on how to figure things out for one's own system; it would be nice too if Windows Help pointed right to it...RR--OK, thanks, so if (255) means that ipv6 is completely disabled, I'm going to guess that this means I can either disregard or simply dsiable Teredo in Device Manager to get rid of the error code?Update: I decided to use my 90 days of free customer support to ask Microsoft. The tech didn't sound like he knew know any more about Teredo than I did, but he looked it up, and said I can either disable it in Device Manager or uninstall it from Device Manager, and since it is an "inbuilt" driver, if my ISP provides ipv6 connectivity down the road it will come back automatically.Which doesn't tell me why it appeared in the first place, where it never had before. He also pointed me to this pagewhich discusses yet another way of uninstalling ipv6 via Network Properties. Except, now that I read it in detail, it doesn't apply...there is no "uninstall" option for ipv6 connectivity, only "install" and "properties". Does anyone know if I should uncheck the box, though?I think I'm going to play it safe and just disable it in Device Manager, get rid of the exclamation point, and leave it alone. Speakeasy.net speed test says my connection speed is where it should be.

ok i got the purpose of this thread,but unfortunatly i cant explain tecnically how teredo tunneling works and im totally noobishat that aspect but what i was trying to refer is how to completly remove ipv6 interface considering teredo explicitly needs for communicating and thats all i know,so knowing that u might want to "remove" it completly by not knowing how that works i advisedto performthe step above!!!and since vista i also reseached to see whats the deal with teredo and found only a few stuff that is not even enuff to start thinking of that..hope i was clear in my explanation.Kind regards,RRPS: I'm going to guess that this means I can either disregard or simply dsiable Teredo in Device Manager to get rid of the error code?exactly thts all u need to do to get rid of the annoying yellow thingy hehe. btw im happy with ipv4 ^^ only a few ppl know about ipv6 thing so i believe that ipv6 is still in experimental/development stage by reading the books around google hehe

You did help, RR. The info about the registry entry was quite useful. I think you are right about ipv6. I would just like to see Microsoft have current info about this in their Windows 7 solutions center, as long as they've put the component in Windows 7--which I can understand them doing if it's the wave of the future (or whatever). It's hard to know what to make of all the info out there with various dates from various sources.

Yup :Dwhat i know that in the very future ipv6 is going to be used by many ppl due to its secureness(is that spelled correctly?)i hope ill be able to understand how it works...Regards,RR

...if my ISP provides ipv6 connectivity down the road it will come back automatically ... That's the gist of Teredo Tunneling Pseudo-Interface. It's just another protocol that one can use if your ISP supports it. To further elaborate, it's a feature that the Digital Subscriber Line Access Multiplexer: DSLAM must support. This is where you are getting your internet connection from the hub office of your internet provider. The only way to really know if it support it is if you get in touch with a high level technician with your ISP. However, if you and your ISP have the hardware to support Teredo Tunneling Pseudo-Interface does it make your internet better? Well, the jury is out on that as I've not seen/read any tests that suggest that it can. I'm talking about a test where everyone is using this feature in your ISP group.

Is there any more information about Teredo Tunneling Pseudo-Interface that you would like to share?

Not at the moment, unfortunately. I am waiting to see if Teredo reasserts itself and more action is needed. I have a funny feeling that someday I'm going to look at Device Manager and see "Teredo Tunneling Pseudo Interface #2" or some such... I was sort of hoping someone from MS would post here, with some current Windows 7 info and advice. No disrespect intended to the MS tech I spoke to on the phone, but all he was really able to do was look it up the same as me, and offer his opinion. Shouldn't MS tech support have the current info readily available to them?

Teredeo is an IPv6 to 4 gateway protocol written by Microsoft with servers maintained by them along with a couple of alternate "meredeo" IPv6 tunnel brokers . You can see the details here in RFC 4380 that they submitted to the Internet Enginerring Task Force (IETF). Teredeo tunnelling is used by, among other things, DirectAccess . Unless you have good reason to, I wouldn't recommend disabling IPv6 altogether, however. This MS TechNet article lists a couple of ways to turn off Teredo only. -Gary

Currently I just have Teredo Tunneling Pseudo Interface Disabled in Device Manager (as stated in my post above); haven't gone into netsh or unchecked the ipv6 box in Network and Sharing properties. I don't see the advantage of disabling ipv6 anyway; then I'd have to jump through hoops to re-enable if my ISP upgraded.

Update: I had to back up a few steps and uninstall ZoneAlarm, and not only did Teredo never show up again in Device Manager, but I now have ipv6 info showing under ipconfig/all. Still the same router, so maybe ZoneAlarm was interfering somehow.

Your suspicion about Zone Alarm is correct. I recently wrestled with this issue. The primary reason you want Teredo is that it is necessary for Homegroup to function properly. You need Homegroup if you have more than one Windows 7 computer on your home network. Also, IPv6 is being used more and more. Sooner or later it will be necessary. Back to Zone Alarm. I installed Zone Alarm on my new computer and then decide to try McAffee. However, unless you configure Zone Alarm to allow IPv6 traffic (Firewall > Advanced), it sets a registry value to disable IPv6. Unfortunately, it does not reset this value when you uninstall it. With IPv6 disabled, Teredo won't start. I uninstalled McAffee (wasn't that happy with it anyway), reinstalled Zone Alarm, checked allow IPv6 in Zone Alarm and Teredo was fine. Another quirk about Teredo, if it is working fiine, it is hidden on device manager. Before assuming it was uninstalled or deleted somehow, use the "Show Hidden Devices" view in the device manager.