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Millions of .de Domains Unreachable For Hours

An anonymous reader writes "Due to an error on behalf of DENIC, the German DNS registrar for second-level .de domains, millions of .de domains fell over the edge (auf Deutsch) of the Internet today. The cause of this GAU (GröYter anzunehmender Unfall = maximum credible accident) is still unknown, as DENIC officials haven't answered any questions from journalists at the time of writing."

29 of 83 comments (clear)

  1. So it looked something like by wiredog · · Score: 2, Funny
  2. Re:auf Deutsch? by kju · · Score: 4, Informative

    Why complain? It's nothing else than the typical bad work of the so called "editors" of slashdot. They also did not notice that a charset conversion error occured. The german phrase is "Größter anzunehmender Unfall", not "GröYter anzunehmender Unfall". But why should we expect that paid editors do actually work?

  3. Re:auf Deutsch? by tomhudson · · Score: 5, Funny
    How hard is it to figure out this?

    Denic Probleme mit den .de-Rootservern? (Update 2)

    Derzeit lassen sich viele .de-Domains nicht auflösen. Schuld daran könnten Probleme auf Seiten der Denic sein, die die Rootserver für die Top-Level-Domain .de betreibt. Mittlerweile ist das Problem behoben.

    Problems with the root .de name server. Of course, it's funnier if you don't know that "die" is "the" in german: "die die Rootserver für die Top-Level-Domain .de" so in germglish it becomes "die, die, tld .de rootserver" OMG terrorist threat!

  4. Re:auf Deutsch? by Anonymous Coward · · Score: 5, Funny

    Unicode on slashdot? UNPOSSIBLE

  5. Re:auf Deutsch? by Anonymous Coward · · Score: 2, Informative

    Stop calling it root server (Shame on you, Golem.de!). The root servers serve the root zone, which contains the top level domains. The affected servers in this incident were the de-TLD servers which serve the second level domain records.

  6. Some more details about the outage by kju · · Score: 5, Informative

    The problem did not affect all domains and it did not affect all nameservers for the german TLD. The nameservers which are reached through "c.de.net" (== c.nic.de) and "s.de.net" (== s.nic.de) more or less worked fine during the outage. Only for a short period of time they did not answer. The other nameservers for .de however lost the knowledge of most domains under the TLD and only returned NS-records for the domain names starting with a digit or with the letter a to e. So for example br-online.de worked fine, while web.de did not. The really bad part is, that the affected nameservers did not refrain to answer but instead answered with NXDOMAIN. So they told that they do not have a record for the query, which in turn effects to "This domain does not exist". Unfortunately such negative answers are cached for a time determined by the authorative nameserver. DENIC's nameserver tell clients to cache this result for 7200 seconds, therefore the outage continued to make problems for up to two hours after the problem was fixed, unless the DNS caches were cleared.

    One more thing to notice: Some sites claim that four of the six nameservers for .de were affected because six hostnames are listed as nameservers for .de and as i told, two of them did work. However both a.nic.de and z.nic.de resolv to anycast IPs which will be routed to a number of different servers around the world depending on your own location. So it are more than six servers in total.

    1. Re:Some more details about the outage by nullchar · · Score: 4, Informative

      According to the DENIC registrar's mailing list, this was just an administrative fuckup. DENIC apparently runs Bind, (on at least the 4 affected logical servers) and they reloaded Bind with an empty zone file. Since the six logical servers are all authoritative, the empty-zone-file servers replied with NXDOMAIN (as they should have).

      The parent is correct, non-existent domain responses should only be cached for 2 hours.

      Since .de is the largest ccTLD (by count of registrations), this is a pretty big deal. On April 3 2010, there were 13.5 million registered .de domains. I wonder how long it took Bind to start with that many zones!

    2. Re:Some more details about the outage by mseeger · · Score: 4, Interesting

      The DE-NIC finallly spoke out. If you don't speak german, the statement doesn't contain anything that wasn't already well known: Yes, there was an problem starting at about 13:00 and it was fixed around 15:45.

  7. DENIC officials haven't answered any questions by Anonymous Coward · · Score: 3, Funny

    Meanwhile I'm sure Hitler will be happy to discuss the situation on youtube.

  8. "Official" response by Anonymous Coward · · Score: 5, Funny

    Here is the response I found on the denic.de site : http://www.denic.de/typo3temp/pics/i_64bbbffdb3.jpg

  9. DNSSEC to blame.... by mseeger · · Score: 4, Interesting

    According to my informations (DFN NOC) the problems resulted from a botched experiment with DNSSEC. Unluckily the DE-NIC is still silent about the incident.

    1. Re:DNSSEC to blame.... by mseeger · · Score: 2, Interesting

      We wouldn't need to speculate if the DE-NIC would give out more details. Concerning myself, the DFN NOC holds more credibility than the DE-NIC.

      There are hundreds of ways to get a DNSSEC deployment wrong. The error is not disturbing by itself. The time needed for a rollback on any change they made is IMHO. As well as the lack of concept about what to do in case something like this happens. Don't get me started on the information policy...

      CU, Martin

  10. Re:auf Deutsch? by Anonymous Coward · · Score: 4, Informative

    Also, "GAU" is probably better translated as "worst-case scenario".

  11. HTML and spaces are now allowed in domain names? by Hurricane78 · · Score: 2

    What is a “<nobr> <wbr></nobr>.de” domain? And why are there millions of them?

    Or is that just another epic failure of someone using a WYSIYFH (what you see is you failing hard) interface, caused by the idiocy that is “K.I.S.S.”?

    --
    Any sufficiently advanced intelligence is indistinguishable from stupidity.
  12. Re:auf Deutsch? by Hurricane78 · · Score: 2, Funny

    So it does not mean “district” anymore? ;)

    --
    Any sufficiently advanced intelligence is indistinguishable from stupidity.
  13. DE-NIC by mseeger · · Score: 3, Interesting

    Once upon a time, the DE-NIC was very respected in the german internet community. But several things happened lately, that let the trust erode. There were internal power struggles, the rising influence of domain traders inside the DE-NIC and the surprising distribution of the two-letter-domain-rush (25% of all domains ending in the hands of a single person). Perhaps this outage will be a wakeup call. If we only count the time spent on customers calling the hotline, the damage for my company is several thousand dollars.

    CU, Martin

  14. Schon. by CorporateSuit · · Score: 4, Funny

    Lufthansa (in German): "Ground, what is our start clearance time?"
    Ground (in English): "If you want an answer you must speak in English."
    Lufthansa (in English): "I am a German, flying a German airplane, in Germany. Why must I speak English?"
    Unknown voice from another plane (in a beautiful British accent): "Because you lost the bloody war."

    --
    I am the richest astronaut ever to win the superbowl.
  15. Re:We call that... by Jesus_666 · · Score: 3, Insightful

    Actually, we reserve the term "Super-GAU" for that. "GAU" translates to "most severe expected accident"; it's still something you design your facility to handle. Consequently, a Super-GAU is an accident that exceeds what you planned for. An important point is that nuclear plants are required not to emit any radioactive material even in case of a GAU. Therefore, any accident during which the plant does release radioactive material is a Super-GAU.

    Three Mile Island is a good example: Back than it was a Super-GAU as nobody designed reactors to handle gas buildup. With modern reactors it's a regular a GAU since modern designs are required to consider that failure mode and mitigate it.

    In short: A GAU is "well, I guess after we're done decontamining and repairing the plant we'll need to do quite a bit of lobbying to get it back online". A Super-GAU is "we just contaminated how much land?".

    --
    USE HOT GRITS WITH STATUE OF NATALIE PORTMAN (NAKED AND PETRIFIED)
  16. Re:auf Deutsch? by xouumalperxe · · Score: 2, Insightful

    so a GAU is a SNAFU?

  17. K.I.S.S.? by circletimessquare · · Score: 3, Informative

    you mean "Keep it simple, stupid"?

    the KISS principle is perhaps one of the greatest principles in engineering, and frequently keeps people's minds grounded in the deliverables, and prevents them from spinning out of control into overly complex solutions, which are in fact the source of most software bugs, not the solution to them

    if this is the principle you are referring to, i don't know where the source of your animosity to it lies, nor why it has anything to do with this particular subject matter

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  18. Constantin Films/YouTube/Der Untergang by BenJeremy · · Score: 4, Funny

    Looks like they put a DMCA takedown notice on the entire country.

    ...I will forever wonder what Hitler would say about this.

  19. Re:We call that... by Mindcontrolled · · Score: 4, Informative

    True. The engineering term for a GAU is "Auslegungsstörfall" - you gotta love German composita. It roughly translates to "design basis accident" - the biggest accident covered by you fail-safes. The "GAU" acronym is mostly misused these days.

    --
    Ubi solitudinem faciunt, pacem appellant.
  20. Re:So... by JWSmythe · · Score: 2, Interesting

        I wonder if this had anything to do with my own DNS outage yesterday. There seemed to be a rolling DoS attack which hit a couple of my nameservers. It hit a slightly out of date version of bind, which made it barf. Of course I have the servers monitoring themselves, so they kept bringing it back up, just to be knocked down again a few minutes later. The solution? Upgrade to current.

        Did anyone else see this, or was it two isolated (and unrelated) cases?

    --
    Serious? Seriousness is well above my pay grade.
  21. Re:auf Deutsch? by KDR_11k · · Score: 2, Informative

    But HTML entities work!

    --
    Justice is the sheep getting arrested while an impartial judge declares the vote void.
  22. What happened to the Germany water website? by InvisibleSoul · · Score: 3, Funny

    .de nile of service!

  23. Obligatory by RevWaldo · · Score: 2, Funny

    ACHTUNG!

    Alles Touristen und Non-technischen Looken Peepers! Das Machinekontrol ist nicht fur Gerfingerpoken und Mittengraben. Oderwise ist easy Schnappen der Springwerk, Blowenfuse, und Poppencorken mit Spitzensparken. Der Machine ist Diggen by Expertzen Only. Ist nicht fur Gewerken by Dummkopfen. Das Rubbernecken Sightseenen keepen das Kottenpicken Hands in das Pockets. So relaxen und watchen das Blinkenlights.

    .

  24. Re:So... by net28573 · · Score: 2, Interesting

    I experienced an array of network cuts recently as well! i thought i was the only one but this confirms my suspicions that something in the network is buggy. I use clearwire as does my mom and just as she was calling me claiming that the internet didn't work mine was acting buggy too. Whats stranger is that despite that all the diagnostics detected errors in the network connection, i could strangely remote connect to moms computer from mine! after this i did do another netstat to see what was going on but it showed no connections. it may have been due to the fact that i was connecting to the desktop there rather than trying to access youtube or another site that was possibly glitchy. anyone else experience something similar?

    --
    RIP TRICERATOPS, YOU NEVER EXISTED
  25. Re:OH NO!!! by grimJester · · Score: 2, Insightful

    .jp, obv.