Network Operations

All IP Addresses Are Equal? "dot-zero" Addresses Are Less Equal

Stéphane Bortzmeyer

• 3 Jul 2013

• 4 min read

In theory, all IP addresses are the same, and you can allocate them at random without a problem. 192.168.1.2 is certainly not better or worse than 192.168.1.15, right? But, in practice, certain IP addresses are regarded as "special" by some implementations and do not yield the same user experience.…

ipv4
atlas

0

11

IPv6 Internet Pollution

Manish Karir

• 25 Jun 2013

• 6 min read

Following up from earlier experiments in which MERIT looked at pollution of IPv4 prefixes, Manish Karir and his colleagues now did an experiment with various IPv6 prefixes. The results can be found in this article.

ipv6
routing

0

IPv6 Security - An Overview

Johannes Weber

• 18 Jun 2013

• 7 min read

The advent of IPv6 changes not only the network components, but also the security field shifts. We see new types of attacks or at least variations of the attacks we know from IPv4. This article provides an overview of the IPv6 security vulnerabilities that arise with the launch of IPv6.

14

3

Evaluating the Effectiveness of Happy Eyeballs

Vaibhav Bajpai

• 13 Jun 2013

• 4 min read

The IETF has developed solutions that promote a healthy IPv4 and IPv6 co-existence. The happy eyeballs algorithm for instance, provides recommendations to application developers to help prevent bad user experience in situations where IPv6 connectivity is broken. We study the effectiveness of the ha…

0

How Many RIPE Atlas Probes Believe They Have IPv6 (But Are Wrong)?

Stéphane Bortzmeyer

• 11 Jun 2013

• 4 min read

To check the connectivity of an IPv6 device with RIPE Atlas, one typically asks N probes to ping the target and deduces the reachability of the target from the percentage of failures. But RIPE Atlas probes, like many IPv6 devices, often believe they are IPv6-connected while they are not.

0

12

One Year Later: Who's Doing What With IPv6?

Antony Gollan

• 5 Jun 2013

• 6 min read

On the anniversary of the World IPv6 Launch, this article takes a look at the readiness of networks to deploy IPv6, using statistics from the RIPE NCC service region and beyond.

0

4

IPv6 RIPEness - Implementing the Fifth Star

Emile Aben

• 12 May 2013

• 8 min read

In this article we present the first publicly available beta version of the fifth IPv6 RIPEness star. This measures real IPv6 deployment from LIRs in the RIPE NCC service region. The methodology is what we think to be the best compromise yet between simple and fair. In this first version, 573 LIRs …

0

5

BGPlay Integrated in RIPEstat

Vasco Asturiano

• 8 May 2013

• 9 min read

We are proud to present a newly revamped version of the well-known BGPlay tool. It is now integrated into RIPEstat and was developed in partnership with the Compunet Research Lab of Roma Tre University.

4

8

Using RIPE Atlas User Defined Measurements to Find the Most Popular Instances of a DNS Anycast Name Server

Stéphane Bortzmeyer

• 3 May 2013

• 12 min read

A DNS anycast name server has several physical instances, all behind the same IP address. Which one is used by a RIPE Atlas probe depends on the location of the probe in the BGP space. RIPE Atlas can query the physical identity of the probe and therefore help to determine which instances have the l…

0

The BGP Visibility Scanner

Andra Lutu

• 24 Apr 2013

• 6 min read

We developed a tool that allows you to check if prefixes originated by your AS have limited visibility on the global routing table. In the article below we describe some of the results we found after analysing many months of global routing table data.

6

2

Network Operations

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