Super User
Super User

Questions tagged [6to4]

For questions relating to transmitting IPv6 packets over an IPv4 network

6to4 is an Internet transition mechanism for migrating from Internet Protocol version 4 (IPv4) to version 6 (IPv6), a system that allows IPv6 packets to be transmitted over an IPv4 network (generally the IPv4 Internet) without the need to configure explicit tunnels. Special relay servers are also in place that allow 6to4 networks to communicate with native IPv6 networks.

See also:

https://en.wikipedia.org/wiki/6to4

19 questions
6
votes
2 answers

What protocol is Window's v6v4tunnel implementing?

Microsoft Windows allows the creation of an "IPv6-in-IPv4 point-to-point tunnel": >netsh interface ipv6 add v6v4tunnel "My Tunnel" 192.168.1.13 209.51.181.2 My question is: what protocol is this? i know netsh exposes access to other tunneling or…
Ian Boyd
  • 23,066
5
votes
4 answers

IPv6 - Public IPs, private IPs, IPs derived from the MAC address? Confused!

I'm pretty much excited for IPv6 because of the large address room and (potential?) owning of more than one IP, or even tens of IPs (/122 subnet?) Though one magazine has now confused me. In a current issue (no. 3) of "CT", a German computer…
sinni800
  • 3,169
3
votes
1 answer

Conntrack gets incorrect forwarding rules for outgoing protocol 41

I'm trying to forward protocol 41 (ipv6-in-ipv4) for an HE tunnel through a WRT54G running Tomato 1.28. Tomato 1.28 is running a 2.4 kernel that knows absolutely nothing about protocol 41, except that it is named "ipv6". Having a 2.4 kernel also…
interfect
  • 323
3
votes
1 answer

Understanding the black magic of IPv6 addresses

my router (AVM Fritz Box) is supporting 6to4. So far it works but I want to understand what's going on. The last few hours I spent on a IPv6 book. There are many things I understand now but there is this one thing I can't figure out: Router's…
Reini
  • 133
2
votes
1 answer

How to configure monowall to use TunnelBroker?

How do i configure monowall for IPv6 connectivity with Hurricane Electric's TunnelBroker.net IPv6 tunneling service? Note: i'll be answering the question myself; since this site is a wiki IPv6 support in m0n0wall is still incomplete. From What…
Ian Boyd
  • 23,066
1
vote
0 answers

How to access internet from HYPER-V guest machine which uses IPv6 Only?

I have Windows Server 2012 installed in my laptop with Hyper-V activated. I have a wireless network interface with which I can connect to the Internet from the physical machine as well has the virtual machines(using external virtual switches) with…
Chedy2149
  • 183
1
vote
1 answer

How to troubleshoot lost 6to4 packets?

On my VDS, both 6to4 and Teredo seem to work poorly (packet loss is about 40%). just-ping.com shows packet loss 10%-80% both for 6to4 and for Teredo address, but 0% for IPv4 address. When running ping6 -n ipv6.google.com and tcpdump -n 'host…
Vi.
  • 17,755
1
vote
0 answers

How to check if protocol 41 (6to4) is filtered by ISP without changing the network configuration?

Obvious way (just setting up 6to4 tunnel and pinging) fails because ip command seems to be read-only on my VPS: can't change any networking-related settings. So I try using raw sockets: root@78.138.100.25# printf…
Vi.
  • 17,755
1
vote
1 answer

How can I set up 6to4 on MikroTik and configure MTU to fix connection failures and update guix?

I set up a 6to4 SIT tunnel on MikroTik following the example for Hurricane Electric in the MikroTik help files. It worked, but the connection to some resources was painstakingly slow and often timed out. For example, download speeds from default…
Roman Riabenko
  • 600
0
votes
1 answer

Routing 6to4 packets through NAT

I have a linux router(dd-wrt w/o ipv6 module, no space for that) and a linux PC(Arch linux). I'm trying to setup my router to forward 6to4 packets(protocol 41) to my PC and setup the tunnel on it. What I've done so far on router is: iptables -t nat…
Magik6k
  • 1
0
votes
0 answers

How to connect a local network to IPv6 site / net?

I want to connect my home network (IPv4 only conection to internet) to my server (IPv4/IPv6), what is the best way to do this? Current setup: Home network ("HOMENETWORK") with Linux (Ubuntu 14.04) router ("HOMEROUTER") DSL (PPPoE) connection, IPv4…
IanH
  • 1,332
0
votes
0 answers

Ipv6 6in4 forwarding

I successfully setup 6in4 ipv6 tunnel to enable ipv6 connectivity at home using a remote linux box with a /64. The connectivity works well between the two host, but not with internet. Here is my setup: Linux box eth0: 2001:470:XXXX:XXXX::1 Linux box…
louis8831
  • 21
0
votes
0 answers

Migrating Home Network/Server to IPv6

So, My current setup includes 2 internet connections via different ISPs coming into my multi-wan router (TL-R480T+) along with another connection from 4G Router. So, in all 3 internet connections. Both ISP connections are load balanced and 4G…
Harsh Moorjani
  • 101
0
votes
0 answers

How to set up a 6to4 tunnel on windows

There are 6to4 tunnel services like http://tb.netassist.ua/ or https://tunnelbroker.net/ but how can i set up those on windows? if I run the script (for example from netassist): netsh interface teredo set state disabled netsh interface ipv6 add…
user1264347
  • 1
0
votes
1 answer

Is my 6to4 relay node Hurricane Electric?

I enabled 6to4. On bgp.he.net I see: You are visiting from 2002:5aXX:XXXX:X:XXXX:XXXX:XXXX:XXXX Announced as 2002::/16 (6to4) Announced as 2002::/16 (6to4) Announced as 2002::/16 (6to4) Announced as 2002::/16 (6to4) Announced as 2002::/16…
MCCCS
  • 237
1
2