Frequently Asked Questions

[Registration]

I've registered for your site and received my password via email but I cannot log into my account. Can you help me?

Please make sure your Internet browser is javascript enabled. Also, check your keyboard 'CapsLock' is not 'ON'. If the problem still exists, please send email to ipv6@he.net along with your account password.


I would like to change my current password. What should I do?

Please log into your account and click 'Update Info' which is located at the top left hand corner, in the 'Account Menu' box. There should be an option for changing the password.


I forgot my account password. Is there a way to reset my password?

Please visit http://ipv6.he.net/certification/forgot_password.php and enter your account email address. You will receive a new account password via email.


I would like to change my account email address. Can you help me?

Please send email to ipv6@he.net along with your username, either street address or phone number that is in your account record, and your new email address. Once your information is verified, we will make the change for you.


I no longer need my certification account. How do I delete the account?"

Please send email to ipv6@he.net along with your username and either street address or phone number that is in your account record. Once your information is verified, we will close your account.


[IPv6 Certification]

I was hoping to change my domain name that I submitted during the Enthusiast level. Can you help me?

Unfortunately, we don't allow the domain name change once submitted. However, You can reset your certification level back to the 'Explorer' level. Simply log into your account and visit http://ipv6.he.net/certification/reset_explorer.php. Please remember that once you set back your certification level, you must retake all the certification tests.


If possible, could I have the certification test reset?

You can reset your certification level back to the 'Explorer' level. Simply log into your account and visit http://ipv6.he.net/certification/reset_explorer.php. Please remember that once you set back your certification level, you must retake all the certification tests


I am really lost. Do you have any video tutorials or a certification forum available?

Yes, we have video tutorials available for each certification test and a certification forum. You may also send email to ipv6@he.net


[Tunnel Broker]

I've tried to create a tunnel but did not succeed. Is there a basic guideline on how to set up a tunnel?

  1. Visit our tunnelbroker.net site and log in.
  2. Once you log into the site, click "Create Regular Tunnel" and provide your IPv4 endpoint address and choose a preferable tunnel server location. (Note: Your IPv4 endpoint address should be displayed on the tunnel creation page)
  3. After you successfully create a tunnel, visit your account's detail page and choose your OS type to get example configuration commands.
  4. Use the commands to configure your machine. Please remember, you must have 'administrator' privilege to configure your machine.
  5. Once you configure your machine, please browse sites like http://ipv6.google.com or http://kame.net to test your IPv6 connectivity.

*Two important notes:
  1. Your IPv4 endpoint address must be reachable via ICMP (Internet Control Message Protocol).
  2. If you are using a NAT (Network Address Translation) appliance, please make sure it allows and forwards protocol 41.
What is Protocol 41?
Protocol 41 is one of the Internet Protocol numbers. Within the IPv4 header, the IPv4 Protocol field is set to 41 to indicate an encapsulated IPv6 packet.
**Useful references:
  1. Video Tutorials: http://ipv6.he.net/presentations.php
  2. Tunnel Broker Forums: http://tunnelbroker.net/forums/


I am confused. What is an IPv4 endpoint address?

An IPv4 endpoint address is also known as a public IPv4 address. Your IPv4 endpoint address should be displayed on the tunnel creation page. You may also visit a site like http://whatismyip.com to confirm the address.


My IPv4 endpoint address is dynamic. Can I still create a tunnel? If yes, what do I need to do when my IP address changes?

Yes, you can still create a tunnel even if you are using a dynamic IPv4 endpoint address. If your IPv4 endpoint address changes, you can either login to the tunnelbroker.net page and update your IPv4 endpoint address or use https://ipv4.tunnelbroker.net/nic/update which is designed to be used to update your IPv4 endpoint address.


While setting up a tunnel, I received an error saying "IPv4 endpoint is unreachable or unstable." What's wrong?

In order to create a 6in4 tunnel, your IPv4 endpoint must be reachable. Please go over your firewall settings and make sure ICMP is allowed.


I have a router that doesn't support protocol 41. Is there any other way to set up a tunnel?

If possible, get a new router that supports (allows and forwards) protocol 41. Alternately, you can either put the host in DMZ and secure it as best as you can, or by-pass your router to set up a tunnel.


I delegated reverse DNS to my own nameservers but it terminated at the he.net DNS servers rather than my delegated DNS servers. What am I doing wrong?

We don't delegate reverse DNS for the tunnel's Point-To-Point(PTP) /64. We delegate only to the routed /64 or /48s. Please make sure you did not delegate to the tunnel's Point-To-Point /64 by mistake.


Why can I not connect to IRC?

Due to a high amount of abuse, we've had to filter IRC access by default on new tunnels. If you need IRC access, completeing the Sage level of the free IPv6 certification will add the unblock IRC option to your tunnel information page, under the "Advanced" tab.


I can't send email via IPv6. What's wrong?

Due to a high and persistent amount of abuse, we had to filter outgoing SMTP (tcp/25) connections by default. If you're not providing email service yourself, you should be able to use port 587 instead to your provider's email server. If you are providing email services over your tunnel and need port 25 opened, please send an email to ipv6@he.net explaining your situation.