Would you like the chance to try the IPv6 protocol?
During the entire week that the LACNIC XI event will be held in
Salvador, Brazil, we will have native IPv6 connectivity.
In addition to the usual double stack network (wireless networks
with SSIDs: lacnic and lacnic-a), during that week we will have an
exclusive wireless IPv6 network (SSID: lacnic-v6only) with no
Participants will be able to connect their devices to any of the
three networks indistinctly according their preference, so we
would like to encourage you to try to connect to the exclusive
IPv6 network as this will allow you to:
- Verify that your computer is properly configured for IPv6
- Verify the IPv6 configuration of your supporting equipment (email
servers, web, jabber, etc.).
- Receive a prize during the IPv6 Experiment.
There are two configurations available at the event's network. In
the first option, participants can configure theirs terminal in an
IPv6 only environment where they will only be able to reach IPv6
destinations. The second option allows the participant to
experiment NAT-PT, a translation mechanism that allows an IPv6
terminal to access IPv4 destinations. The two configurations can
be set by changing the domain name server on each terminal.
What is the IPv6 Experiment?
During the LAC-TF morning session to be held on Friday 30 May, the
two wireless IPv4 networks (lacnic and lacnic-a) will cease being
broadcast, so that connectivity will only be possible through the
exclusive IPv6 network.
Similar experiments have already been conducted at other fora
such as NANOG, IETF, APRICOT, ARIN, RIPE and MENOG.
The experiment is scheduled as follows:
Friday, 30 May
9:00 am - Presentation of the Experiment - Roque Gagliano - LACNIC
9:15 / 9:45 am - The IPv4 network will be switched off and only
native IPv6 connections, without translation mechanism, will be
9:45 / 10:30 am - Only native IPv6 connections with NAT-PT
translation mechanism are available
10:40 am - End of the experiment and reception of comments from
General information for the experiment:
IPv6 exclusive configuration
Domain name server: 2001:12fe:0:100::3
Domain name server (Windows XP): 172.16.0.3
Domain name server: 2001:12fe:0:100::2
Domain name server (Windows XP): 172.16.0.2
## Windows VISTA
It shouldn’t be necessary to configure IPv6 unless it has been
Lenovo Thinkvantage Access Connections always assume that
an IPv4 network is available and automatically disable the
interfaces that do not have an IPv4 address.
In an IPv6 network it is necessary to use the GUI (Graphical
User Interface) to disable this tool or alternatively an IPv4
address must be configured for the interface.
## Windows XP
In order to install IPv6, open a command window by clicking "Start", “Run...” and then enter "cmd".
Enter the following command in the command window:
#netsh interface ipv6 install
Once the experiment is concluded, if you wish to uninstall the
IPv6 support, enter the following command:
#netsh interface ipv6 uninstall
Windows XP does not completely support the IPv6 stack.
Windows XP supports the basic IPv6 protocol and configures
its interfaces as expected, but unfortunately the DNS client
cannot use IPv6 transport.
In order to proceed with this experiment some adjustments
will be necessary.
LACNIC’s "lacnic-v6only" network will broadcast private IPv4
addresses through DHCPv4, which will be used by computers
running Windows XP. No default route or domain name server
will be included.
Users of computers running Windows -XP that wish to have
connectivity during the experiment must configure a static
DNS server. For this event the following servers will be
nameserver 172.16.0.3 (IPv6 exclusive configuration)
nameserver 172.16.0.2 (NAT-PT configuration)
Most Linux distributions are IPv6-enabled; however, DHCPv6 is
usually not supported by default. Users may configure the IPv6
NS directly at/etc/resolv.conf or through the system-config-network.
Although some Linux distributions include a DHCPv6 client, many
include an older version which presents interoperability
problems with the current version of the DHCPv6 protocol..
We recommend that users configure their DNS servers manually
by editing the /etc/resolv.conf file or using the network
configuration of their distribution.
The network management system does not support IPv6 only. If
the management system does not receive an IPv4 address it
disables the network interface.
A workaround for this problem is to configure the network
Apple MacOS is IPv6-enabled. Make sure you use the GUI for any
MacOS configuration. Manually modifying configuration files
does not allow changes to be visible to all applications and
therefore some applications may not work as expected.
MacOS does not support DHCPv6 so the NS will have to be
activated manually. This can be done through the GUI as follows:
Open Network Preferences, select Active Interface, under DNS
Servers add the DNS server’s IPv6 address.
nameserver 2001:12fe:0:100::3 (IPv6 exclusive configuration)
nameserver 2001:12fe:0:100::2 (NAT-PT configuration)
The generic (default) kernel is IPv6-enabled. If you have edited kernel configurations, go back and make sure that you have:
You’ll need to edit /etc/rc.conf to add:
Known browser issues:
Firefox does not support IPv6 by default. To solve this problem, enter "about:config" in the address bar, then enter the filter "network.dns.disableipv6". Change the value to "false" by double clicking on the value column.
Thunderbird does not support IPv6 by default either. To use IPv6, go to Preferences, Advanced, and then select Config Editor and look for "network.dns.disableIPv6". Change the value to "false" by double clicking on the value column.