- ipv6-wg - mailman.ripe.net

IPv6 World Day prep behind a crappy hotel DNS resolver
by Shane Kerr 07 Jun '11

07 Jun '11

Hello, IPv6 World Day is tomorrow! I'm at the ENOG meeting in Moscow, which has a pretty common hotel Internet setup - a web redirect on first connect and then some magic somewhere records your information so you get out to the Internet more-or-less directly from then on. Someone at the meeting was kind enough to set up IPv6 service here. Yesterday it seemed a bit bumpy, but today it is working nicely. However, the network has a somewhat broken DNS resolver, which is also sadly pretty common at hotels. It seems to have problems answering normal IPv4 address queries (A records), but mostly works for that. It does not handle IPv6 address queries (AAAA records) at all. :( I tried running a resolver on my laptop, but the hotel network restricts DNS UDP packets to a maximum of 512 bytes. Even worse, it truncates larger answers to that size, and does not set the truncate bit. This confuses BIND mightily, as you would expect, since it is basically getting corrupted packets. Plus it blocks DNS TCP completely. Suffice it to say IPv4 is damaged here. A quick Google reveals that OpenDNS has IPv6 servers, which allows me to use the IPv6 transit, which is free of nonsensical tampering: http://warrenkwok.blogspot.com/2011/05/opendns-offers-ipv6-resolvers.html The IPv6 eyechart is now a sea of green! I'm ready for tomorrow. Are you? :) -- Shane

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Asymmetric 6to4 measurements
by Mirjam Kuehne 06 Jun '11

06 Jun '11

[apologies for duplicates] Dear colleagues, In preparation for World IPv6 Day, Richard Barnes and Emile Aben have been working on measuring the impact of 6to4 on the latency of Internet traffic. This new article on RIPE Labs describes the measurement techniques and some initial findings: http://labs.ripe.net/Members/rbarnes/world-ipv6-day-asymmetric-6to4-measure… Kind Regards, Mirjam Kuehne RIPE NCC

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New article on RIPE Labs: Experimental NAT64/DNS64 Service at LITNET
by Mirjam Kuehne 01 Jun '11

01 Jun '11

Dear colleagues, The Lithuanian research and education network LITNET and the Kaunas University of Technology provide an experimental NAT64/DNS64 service. Please find more information on RIPE Labs: http://labs.ripe.net/Members/raimis/experimental-nat64-dns64-service Kind regards, Mirjam Kuehne RIPE NCC

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How DNS caching affects the start of World IPv6 Day
by Mirjam Kuehne 31 May '11

31 May '11

[apologies for duplicates] Dear colleagues, Please find a new article on RIPE Labs showing how DNS caching affects the start of World IPv6 Day and how World IPv6 Day participants can minimise these effects: http://labs.ripe.net/Members/emileaben/when-does-world-ipv6-day-start Kind regards, Mirjam Kuehne RIPE NCC

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IPv6 on P2P links
by Jasper Jans 30 May '11

30 May '11

Can anyone give me some real world experience with IPv6 numbering on P2P links in their network? I've seen the recommendations swing from '/64' to '/127 if your equipment can handle it' and even to 'do not assign anything at all just use link-local' and access your devices over the loopback which your IGP will distribute. The last option seems interesting to me from a IP assignment point of few. It safes me having to allocate a block for this part of the infrastructure. I'm just wondering if in the long run it will not make life harder. Jasper Op dit e-mailbericht is een disclaimer van toepassing, welke te vinden is op http://www.espritxb.nl/disclaimer

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Test your connectivity for World IPv6 Day
by Mirjam Kuehne 27 May '11

27 May '11

Dear colleagues, The RIPE NCC is preparing some measurements for World IPv6 Day. One of them is the IPv6 eye chart, a web page that allows you to test your connectivity to selected dual-stacked web sites and World IPv6 participants. The goal is to see if an end user has connectivity problems to dual-stacked websites. You can read more on RIPE Labs: http://labs.ripe.net/Members/emileaben/world-ipv6-day-ipv6-eye-chart The test can be found here: http://ipv6eyechart.ripe.net/ If you have any questions or want to be included in the test, please contact us at labs at ripe dot net. Kind Regards, Mirjam Kuehne RIPE NCC

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RE: [ipv6-wg] IPv6 on P2P links
by Elad Hefetz 26 May '11

26 May '11

The major problem I can assume happen when using only link local is the issue of replacing hardware. When you replace the cards on the routers it will require you to change the internal routing protocol (IS-IS \ OSPF). Another issue is debugging - when using trace route - all you will see is link-local addresses which make it very difficult to debug issues. We are configuring all our P2P links with /64 prefix on each link. This is not idle and very wasteful way, but it's the only solution to not interfere with RFCs and standards. Also - this is the only way to be multi vendors prepared, be ready for future to come with new IPv6 applications and products. MHO, Elad -----Original Message----- From: ipv6-wg-admin(a)ripe.net [mailto:ipv6-wg-admin@ripe.net] On Behalf Of Jasper Jans Sent: Thursday, May 26, 2011 11:08 AM To: ipv6-wg(a)ripe.net Subject: [ipv6-wg] IPv6 on P2P links Can anyone give me some real world experience with IPv6 numbering on P2P links in their network? I've seen the recommendations swing from '/64' to '/127 if your equipment can handle it' and even to 'do not assign anything at all just use link-local' and access your devices over the loopback which your IGP will distribute. The last option seems interesting to me from a IP assignment point of few. It safes me having to allocate a block for this part of the infrastructure. I'm just wondering if in the long run it will not make life harder. Jasper Op dit e-mailbericht is een disclaimer van toepassing, welke te vinden is op http://www.espritxb.nl/disclaimer

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Announcement: RIPE NCC Training Courses
by Training Mailbox 23 May '11

23 May '11

[Apologies for duplicate e-mails] Dear Colleagues, The RIPE NCC invites you to register for one of our upcoming training courses: - The LIR Training Course This course teaches LIRs how to request Internet number resources and interact with the RIPE NCC. A course outline is available at: http://www.ripe.net/lir-services/training/courses/lir/outline/ - The Routing Registry Training Course This course teaches LIRs how to use the RIPE Database for routing. A course outline is available at: http://www.ripe.net/lir-services/training/courses/rr/ - The IPv6 Training Course This course teaches LIRs about the need for IPv6 and includes basic information on how to plan your deployment. A course outline is available at: http://www.ripe.net/training/ipv6/outline.html To see the location of upcoming courses and to register, please use the LIR Portal or complete the registration form on our website at: RIPE NCC Upcoming Courses List & Registration https://lirportal.ripe.net/lirportal/training/course-list.html If you have any questions, please do not hesitate to contact us at <training(a)ripe.net>. Kind regards, Rumy Kanis Training Services Manager RIPE NCC

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IPv6 CPE Survey - Initial Results on RIPE Labs
by Mirjam Kuehne 23 May '11

23 May '11

[apologies for duplicates] Dear colleagues, Since we published the IPv6 customer premise equipment (CPE) survey during the RIPE 63 meeting, we received more than 100 responses. This new article on RIPE Labs shows some interesting initial results: http://labs.ripe.net/Members/marco/ipv6-cpe-survey-results-may-2011 The survey is still open. If you are using an IPv6 capable CPE and have not yet filled in the survey, we would like to encourage you to do so. The survey can be found here: http://labs.ripe.net/Members/marco/ipv6-cpe-survey-please-participate Kind Regards, Marco Hogewoning & Mirjam Kuehne RIPE NCC

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IPv6 filtering in an ISP environment
by Erik Bais 18 May '11

18 May '11

Hi, I'm looking for examples on what people have implemented as ingress filtering for IPv6 prefixes in an BGP environment. I'm would like to get some sort of filter that will not require daily maintenance based on assigned prefixes by the RIR. I'm leaning towards having some sort of filtering based on: Drop anything from bogon list allow RIR PA space - between /12 - /35 Allow RIR PI space between /32 - /48. (For instance for the RIPE 2001:67c::/32 & 2001:7f8::/32 parts ) So basically, a bit more strict filter than allow 2003::/3 and not having to update it daily with each assignment made J Also some insight in why you have selected to filter on a specific prefix length is very helpful. Erik Bais

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