[LAC-TF] FLIP6 - 2016 Report

Azael Fernandez Alcantara afaza at unam.mx
Fri May 13 17:08:25 BRT 2016

During the 2016 edition of the Latin American IPv6 Forum,  excelled the 
topics of DHCPv6, 5G, SDN/NFV, OpenWrt, Scalable routing, Network 
Reconnaissance  and  study cases of university and community networks.

The presentations included:

Two talks of special guests:

- IPv6-Based 5G Networking Enabled by SDN-NFV, Cloud Computing and IoT. By 
Latif Ladid, president of the IPv6 Forum.

Emphasis was made during the presentation on the evolution that the 
protocols have had and will have on the Internet, which in many cases has 
become "InterNAT". The new Internet is already contemplating technologies 
as SDN and NFV with Openstack v6, as well as the necessary use of IPv6 in 
the 5G networks. Regarding IoT and data generation, the third version is 
the one that uses IPv6 with 6LowPAN and ROLL. IPv6 makes possible  the 
two-ways Internet E2E (End-to-end), and the tendency will be IPv6 over 5G 
and WDM. Later, numbers were given about the deployment of IPv6 in the 
world, excelling Brazil, Ecuador and Peru in Latin America.

- DHCPv6 Operational Challenges by Tom Coffeen, evangelist of IPv6 in 

IPv6 statistics in the world were mentioned, mainly in the USA; the 
estimate, according to Google, the % of users of IPv6 will be 50% for 
2018. Were given the differences between DHCP for IPv4 and IPv6, outlined 
the advantages of the latter, as well as variations and types such as 
Stateful and Stateless DHCPv6 based on the management of two flags "M" and 
"O", and the behaviors depending on the operating system of the user. 
Different solutions were presented to the possible fail overs of DHCPv6 in 
its deployment. Some techniques were also named to have a more secure and 
controlled implementation of DHCPv6; recommendations on addressing schemes 
and the lack of DHCPv6 support in Android devices.

And 7 presentations were selected by the Evaluation Committee of the 
FLIP6, composed of 9 people, that were:

- Deploying SDN Technologies in Hand with IPv6

It started with UDG data and statistics on the use of IPv6, where the 
number of students is 3 times higher than that of available IPv4 
addresses. The benefits of combining the use of SDN together with IPv6 to 
offer for example, by means of dynamic circuits, payroll services. The use 
of OESS for the unfolding of OpenFlow with IPv6 support was mentioned. As 
well as the development of SDN applications for traffic optimization; and 
a VoIPv6 study case.

- Analysis of IPv6 Implementation in OpenWrt According to RFC7084

As part of the IPv6.br project, where it was determined the lack of IPv6 
in edge and last mile devices, motivated this analysis of IPv6 using 
OpenWrt, taking as reference the RFC 7084 and conducting a series of 
experiments to find out the degree of support for IPv6 in 3 different 
topologies. Becoming obvious the lack of full support of all 
functionalities like DAD, and the state of requirements in the categories: 
general, on the WAN side, "Link-Layer, assignment of addresses, delegation 
of prefixes, ULA, on the LAN side, 6RD and DS-Lite. It was concluded that 
OpenWrt works with IPv6 but presents some errors for proper operation.

- Strategy of Scalable Routing in the Transition and Adoption of IPv6.

Starting with an analysis of the growth of BGP entries in routing tables 
at global level and the estimate for 2020, the mention of the advantages 
and disadvantages in the use of the type of memory known as TCAM, where by 
default is assigned little space for the number of IPv6 routes. The use of 
multihoming and the different protocols alternatives to obtain a more 
scalable routing like: SCTP, shim6, HIP and LISP, where the latter is more 
appropriate and has the highest degree of development. The different 
implementations of LISP, their advantages and use cases were also 

- Comparison between mechanisms of IPv6 transition

After mentioning a review of the different existing mechanisms of 
transition/coexistence with IPv6, the different options were named for 
deployments  with IPv6-only, such as: DS-LITE, Lightweight 4over6, 
464XLAT, MAP-E and MAP-T, with their advantages and disadvantages. At the 
end a comparative table was presented with the methods of transition and 
the indication of the different features in each one, as well as an study 
case in a multi-service network.

- Ask Dr. IPv6 and statistics of IPv6

A program called "Dr. IPv6" was presented, which consists of a mail 
account that will receive questions from the community of Latin America 
and the Caribbean, and will be answered, without warranty, with audio by 
an expert, the most suitable according to the question's topic. The 
recording will be available as Podcast, in MP3, and the answer will be 
announced in the list of lactf.

In the presentation of statistics, data analysis gathered by LACNIC 
(Oct.2015-April 2016) were shown and these are openly available including: 
the # of Web sites with content and AAAA records, the % of domains AAAA 
pointing to addresses in the region of LACNIC, the size of the 
announcements of prefixes (BGP Table), BGP with RPKI, and consultations 
with DNSSec. Finally, the formats available of these data.

- Advanced IPv6 Network Reconnaissance

Taking as a basis the RFC7707, it was noted that since many IPv6 
allocations are performed under certain well-known patterns then, IPv6 
networks are scannable. A myth that exist.
As a result of an experiment carried out in allocation patterns for 
servers: Web, mail and DNS, and networks with customer segments; through 
the use of developed tools to perform scans. References were also made in 
the use of extension headers and the consequences on their use by the 
filtering and discarding that is performed. Finally was introduced the 
topic of the scanning of TCP/UDP ports.

- Experience implementing IPv6 in the "Universidad Distrital Francisco 
Jose Caldas"

An explanation was given about the infrastructure of the network of the 
university belonging to RITA ( Research Network of Advance Technology), 
including the phases of the IPv6 implementation, IPv6 enabled services and 
research applications on IPv6, by promoting their use and adoption, 
testing for IPv6 deployment, and the connections to academic networks.

In Lightning Talks of IPv6, a single presentation was presented:

Mesh Broker Tunnel for Communitarian networks. By Nicholas Echaniz of 
Alter Mundi, Argentina.

  An implementation of libremesh, due to the high latency values of 
available commercial "tunnel broker" services, and the need to connect 
different networks of AlterMundi, with the minimum possible latency. When 
combining tinc-vpn (a VPN software mesh) with a protocol of dynamic 
routing (babeld or bmx6). Finally was mentioned the future deployment of a 
communitarian network using a scheme similar to the one of 6RD.

To conclude the FLIP6-2016, were announced the winners of "Angel" play, 
which was available at the entrance to the main auditorium, and two 
attendants to the 3rd part or second day of the FLIP6, who answered 
correctly 2 questions formulated.

Azael Fernandez Alcantara
FLIP6 Moderator

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