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RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

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Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

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    1. Rich Felker‏ @RichFelker 9 Mar 2017
      Replying to @RichFelker @vavrusam and

      Multiple round trips to get 100 extra A's you don't want or need is not decent UX.

      2 replies 0 retweets 0 likes
    2. Marek Vavrusa‏ @vavrusam 9 Mar 2017
      Replying to @RichFelker @CopperheadOS @revskills

      ok, now we've established that spec doesn't support it and servers don't do it, you argument on UX.

      2 replies 0 retweets 0 likes
    3. Marek Vavrusa‏ @vavrusam 9 Mar 2017
      Replying to @vavrusam @RichFelker and

      which is fair. It's be desirable in some cases. It's not in some other - when you need to validate.

      1 reply 0 retweets 0 likes
    4. Rich Felker‏ @RichFelker 9 Mar 2017
      Replying to @vavrusam @CopperheadOS @revskills

      Stub resolvers do not validate. They trust a validating resolver on localhost.

      2 replies 0 retweets 0 likes
    5. Marek Vavrusa‏ @vavrusam 9 Mar 2017
      Replying to @RichFelker @CopperheadOS @revskills

      no stubs don't validate, but forwarder that would receive something from your 8.8.8.8 would have to.

      1 reply 0 retweets 0 likes
    6. Rich Felker‏ @RichFelker 9 Mar 2017
      Replying to @vavrusam @CopperheadOS @revskills

      Right. The forwarder that does validation needs ability to do edns or tcp.

      2 replies 0 retweets 0 likes
    7. Marek Vavrusa‏ @vavrusam 9 Mar 2017
      Replying to @RichFelker @CopperheadOS @revskills

      so in your setup I'm assuming you talk to 8.8.8.8 directly?

      1 reply 0 retweets 0 likes
    8. Rich Felker‏ @RichFelker 9 Mar 2017
      Replying to @vavrusam @CopperheadOS @revskills

      It's not my setup but a user who encountered failed lookups in musl-based containers using 8.8.8.8.

      1 reply 0 retweets 0 likes
    9. Marek Vavrusa‏ @vavrusam 9 Mar 2017
      Replying to @RichFelker @CopperheadOS @revskills

      okay, and something is preventing the stub to use edns?

      1 reply 0 retweets 0 likes
    10. Rich Felker‏ @RichFelker 9 Mar 2017
      Replying to @vavrusam @CopperheadOS @revskills

      Our stub resolver intentionally doesn't do edns or tcp, for several reasons.

      2 replies 0 retweets 0 likes
      Rich Felker‏ @RichFelker 9 Mar 2017
      Replying to @RichFelker @vavrusam and

      Low latency, statelessness, ability to use same query packet concurrently w/multiple servers, etc.

      4:02 PM - 9 Mar 2017
      2 replies 0 retweets 0 likes
        1. Rich Felker‏ @RichFelker 9 Mar 2017
          Replying to @RichFelker @vavrusam and

          Also bounding the size of the response.

          0 replies 0 retweets 0 likes
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        2. Marek Vavrusa‏ @vavrusam 9 Mar 2017
          Replying to @RichFelker @CopperheadOS @revskills

          non of these things are related to edns.

          1 reply 0 retweets 0 likes
        3. Rich Felker‏ @RichFelker 9 Mar 2017
          Replying to @vavrusam @CopperheadOS @revskills

          To do edns you have to first know if the server you're querying supports it.

          1 reply 0 retweets 0 likes
        4. Marek Vavrusa‏ @vavrusam 9 Mar 2017
          Replying to @RichFelker @CopperheadOS @revskills

          no you don't have to, you try and 99% or so you're right. edns is now 15 years old.

          1 reply 0 retweets 0 likes
        5. Marek Vavrusa‏ @vavrusam 9 Mar 2017
          Replying to @vavrusam @RichFelker and

          the bigger problem is stubs don't want to evolve with the spec, which makes me sad as server author :(

          1 reply 0 retweets 0 likes
        6. Rich Felker‏ @RichFelker 9 Mar 2017
          Replying to @vavrusam @CopperheadOS @revskills

          The whole point of a standard protocol is that stubs don't have to evolve.

          1 reply 0 retweets 0 likes
        7. Rich Felker‏ @RichFelker 9 Mar 2017
          Replying to @RichFelker @vavrusam and

          RFC 1035 has everything a stub needs. Advanced features are for inter-DNS use, not stub-to-DNS.

          2 replies 0 retweets 0 likes
        8. Rich Felker‏ @RichFelker 9 Mar 2017
          Replying to @RichFelker @vavrusam and

          If a static-linked ping from 1989 doesn't work with your dns, it's your dns that's broken, not the stub.

          1 reply 0 retweets 0 likes
        9. Marek Vavrusa‏ @vavrusam 9 Mar 2017
          Replying to @RichFelker @CopperheadOS @revskills

          this is wrong analogy. You're asking for improved UX and refuse to use improved version of the protocol

          1 reply 0 retweets 0 likes
        10. 6 more replies

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