Streaming video and opendns

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4 comments

  • Avatar
    rotblitz

    This can be related to OpenDNS in case you are far away from the OpenDNS location you use.  Post the complete plain text output of the following command to find out:

    nslookup -type=txt debug.opendns.com.

  • Avatar
    ictag

    It's more of a general question, about whether streaming continuously uses opendns in some way, or just for the very first lookup?

    By the way, I tried configuring the router to routing the DNS to Google instead of OpenDNS and that deteriorated the performance.

    Here are the results of nslookup.

     

    Server:  fritz.box
    Address:  192.168.178.1

    debug.opendns.com    text =

        "server 3.fra"
    debug.opendns.com    text =

        "flags 20 0 2f6 800100000081400"
    debug.opendns.com    text =

        "id 612372"
    debug.opendns.com    text =

        "source 79.255.125.182:38151"

     

     

  • Avatar
    rotblitz

    That's fine.  Your problem is not DNS related.  You're located in southern Germany and using the OpenDNS Frankfurt location. The OpenDNS resolver addresses are configured on your FritzBox router.  Your IP address 79.255.125.182 is registered with OpenDNS network ID 612372.

    OpenDNS is not a proxy but a pure recursive DNS service and as such has nothing to do with connectivity, just with name resolution.  When it comes to connectivity (e.g. "streaming"), DNS is already over and gone. DNS is the phone book of the internet, not the phone lines.  That said, no, a DNS service is never being used for "streaming", in no way.

    Also, this "just for the very first lookup" is too restrictive.  Your networking applications decide when and how and how often to perform a DNS lookup, and depending on the DNS information is still cached locally or not, all DNS lookups not being cached locally will go to the DNS service being configured, e.g. OpenDNS.

    It seems you're not clear about the role of DNS.  Read this article: http://igoro.com/archive/what-really-happens-when-you-navigate-to-a-url/

  • Avatar
    ictag
    "When it comes to connectivity (e.g. "streaming"), DNS is already over and gone" That is exactly what I thought but wanted confirmation. Many thanks.

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