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Thread: Can't open web sites but can ping....

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  1. #1
    Join Date
    Feb 2012
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    33

    Can't open web sites but can ping....

    I had a duplicate IRQ issue which caused my NIC not to work. I managed to sort that (nou POST error of duplicate IRQ).

    However, I stil can't open any web pages or do any apt-get update / install. The funny thing is that I can ping a DNS site (196.36.199.229).

    Why would I not be able to open a web site or apt-get installs?

  2. #2
    Join Date
    Dec 2007
    Location
    California
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    4,904
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Can't open web sites but can ping....

    my guess is your dns is not configured correctly or dns isn't working. Try doing an nslookup and paste the response.

    Code:
    nslookup ubuntu.com
    "You can't expect to hold supreme executive power just because some watery tart lobbed a sword at you"

    "Don't let your mind wander -- it's too little to be let out alone."

  3. #3
    Join Date
    Feb 2012
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    33

    Re: Can't open web sites but can ping....

    dns lookupp results were
    Code:
    ;; connection timed out; no servers could be reached

  4. #4
    Join Date
    Nov 2007
    Location
    London, England
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    5,953
    Distro
    Xubuntu 15.10 Wily Werewolf

    Re: Can't open web sites but can ping....

    So your DNS name resolution is broken.

    What version of *buntu are you using?
    What is the content of /etc/resolv.conf
    What is the output of:
    Code:
    nslookup ubuntu.com 8.8.8.8

  5. #5
    Join Date
    Feb 2012
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    Re: Can't open web sites but can ping....

    Quote Originally Posted by The Cog View Post
    What version of *buntu are you using?
    Code:
    Ubuntu 12.04.1.TLS
    Quote Originally Posted by The Cog View Post
    What is the content of /etc/resolv.conf
    Code:
    # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
    #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
    nameserver 127.0.0.1
    Quote Originally Posted by The Cog View Post
    What is the output of:
    nslookup ubuntu.com 8.8.8.8
    Code:
    ; ; connection timed out; no servers could be reached

  6. #6
    Join Date
    Nov 2007
    Location
    London, England
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    5,953
    Distro
    Xubuntu 15.10 Wily Werewolf

    Re: Can't open web sites but can ping....

    You say you can ping 196.36.199.229. Can you ping other addresses?

    The failure of nslookup ubuntu.com 8.8.8.8 is worrying. It should have asked 8.8.8.8 (a name server operated by google) to do the lookup. I wonder if your ISP is blocking DNS from servers other than their own. I do't know how to prove or disprove that. Can you ping 8.8.8.8?

    It seems that your normal DNS server is dnsmasq runnung on your own PC. This is a new trick by Ubuntu, and I have never seen any documentation on how it works, or what to do when it doesn't.

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