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Posts Tagged dns

Able to ping IP’s but not domain names in Debian

Jan 23

Posted by admin in Linux / Freebsd | No Comments

Well a funny thing happened today and I think might have to do with me changing the router’s static DNS’s to google’s and then changing it back again.. Anyways somewhere along there debian forgot what a DNS was and lost the ability to resolve domains.. IP’s were fine, just not domains.  The router was able to ping domains, just not my machine.

After fiddling with it for a bit I went into the WICD settings for that connection and specified static IP’s for the top 2 DNS entries.  Specifically 8.8.8.8 and 8.8.4.4 .  After reconnecting with those settings in place I was able to ping domains again(and consequentially write this post)

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Pinging domain name results in “0.0 0.0 0.1 ::1″ – booerns

Jan 9

Posted by admin in Linux / Freebsd | No Comments

Well I was just about to make a final move off of my old VPS and I wanted to double check that eveyrthing on the new server was up to date and nothing got left behind.  I noticed however that for a couple websites in particular there was a lot of activity going on on some domains for what should be a dead server.  So I checked some logs, did some pings and found a lot of bots spidering around but also found that about half of the location on just-ping.com would come back as: ”0.0     0.0     0.1     ::1″  or you can see a full ping result below for a better example:

  1. Location       Result  min. rrt        avg. rrt        max. rrt        IP
  2.  Singapore, Singapore:  Okay    189.9   206.1   245.7   65.39.222.41
  3.  Amsterdam2, Netherlands:       Checkpoint temporarily not available    –       –       –       -
  4.  Florida, U.S.A.:       Okay    76.4    77.0    78.0    65.39.222.41
  5.  Amsterdam3, Netherlands:       Okay    0.0     0.0     0.0     ::1
  6.  Hong Kong, China:      Okay    0.0     0.0     0.0     ::1
  7.  Sydney, Australia:     Okay    183.2   183.6   184.7   65.39.222.41
  8.  München, Germany:   Okay    187.3   187.7   188.0   65.39.222.41
  9.  Cologne, Germany:      Okay    0.0     0.0     0.0     ::1
  10.  New York, U.S.A.:      Okay    0.0     0.0     0.0     ::1
  11.  Amsterdam1, Netherlands:       Okay    169.7   170.1   171.2   65.39.222.41
  12.  Stockholm, Sweden:     Okay    0.0     0.1     0.1     ::1
  13.  Santa Clara, U.S.A.:   Okay    25.4    26.1    26.6    65.39.222.41
  14.  Vancouver, Canada:     Okay    0.0     0.0     0.0     ::1
  15.  Madrid, Spain: Okay    181.6   184.8   189.4   65.39.222.41
  16.  Padova, Italy: Okay    0.0     0.0     0.0     ::1
  17.  Austin, U.S.A.:        Okay    0.0     0.0     0.0     ::1
  18.  Amsterdam, Netherlands:        Okay    0.0     0.0     0.0     ::1
  19.  Paris, France: Okay    0.0     0.0     0.0     ::1
  20.  Melbourne, Australia:  Okay    0.0     0.0     0.0     ::1
  21.  Shanghai, China:       Okay    162.4   163.4   163.8   65.39.222.41
  22.  Copenhagen, Denmark:   Okay    0.0     0.0     0.0     ::1
  23.  Lille, France: Checkpoint temporarily not available    –       –       –       -
  24.  San Francisco, U.S.A.: Okay    0.0     0.0     0.0     ::1
  25.  Zurich, Switzerland:   Okay    180.7   181.1   181.5   65.39.222.41
  26.  Mumbai, India: Okay    287.9   288.6   289.4   65.39.222.41
  27.  Chicago, U.S.A.:       Okay    0.0     0.0     0.1     ::1
  28.  Nagano, Japan: Okay    131.0   131.2   132.0   65.39.222.41
  29.  Haifa, Israel: Okay    247.1   247.8   248.3   65.39.222.41
  30.  Auckland, New Zealand: Okay    185.1   185.7   187.1   65.39.222.41
  31.  Antwerp, Belgium:      Okay    161.4   161.9   162.7   65.39.222.41
  32.  Groningen, Netherlands:        Okay    184.5   185.1   185.8   65.39.222.41
  33.  Moscow, Russia:        Okay    0.0     0.0     0.0     ::1
  34.  Dublin, Ireland:       Okay    160.0   160.6   161.3   65.39.222.41
  35.  Oslo, Norway:  Okay    0.0     0.0     0.0     ::1
  36.  Kharkov, Ukraine:      Okay    204.0   204.0   204.0   65.39.222.41
  37.  Vilnius, Lithuania:    Okay    206.8   209.4   211.0   65.39.222.41
  38.  Bucharest, Romania:    Okay    194.4   195.2   197.2   65.39.222.41
  39.  Bangkok, Thailand:     Okay    222.7   223.5   225.3   65.39.222.41
  40.  Kuala Lumpur, Malaysia:        Okay    188.3   189.7   193.3   65.39.222.41
  41.  Jakarta, Indonesia:    Okay    294.1   294.5   294.9   65.39.222.41
  42.  Cape Town, South Africa:       Okay    298.8   299.3   299.6   65.39.222.41
  43.  Glasgow, United Kingdom:       Okay    150.5   150.9   151.3   65.39.222.41
  44.  Lisbon, Portugal:      Okay    188.3   195.4   200.1   65.39.222.41
  45.  Chicago, U.S.A.:       Okay    0.0     0.0     0.1     ::1
  46.  Dallas, U.S.A.:        Okay    65.2    65.6    66.1    65.39.222.41
  47.  Buenos Aires, Argentina:       Okay    204.7   204.9   205.7   65.39.222.41
  48.  Istanbul, Turkey:      Okay    205.9   206.5   206.9   65.39.222.41
  49.  Gdansk, Poland:        Okay    0.0     0.0     0.0     ::1
  50.  Beijing, China:        Okay    748.6   991.9   1,303.0 65.39.222.41
  51.  Belgrade, Serbia:      Okay    159.6   177.6   196.7   65.39.222.41
  52.  Toronto, Canada:       Okay    61.5    61.9    62.4    65.39.222.41
  53.  Novosibirsk, Russia:   Okay    275.4   275.9   276.9   65.39.222.41
  54.  Athens, Greece:        Okay    0.0     0.0     0.0     ::1
  55.  Frankfurt, Germany:    Okay    0.0     0.0     0.0     ::1
  56.  Sofia, Bulgaria:       Okay    200.3   200.8   201.2   65.39.222.41
  57.  Budapest, Hungary:     Okay    177.3   177.9   178.9   65.39.222.41
    So naturally I floundered around for an hour or two before putting two and two together and than in all of my zone files for the domains on the server I have this: @      IN      AAAA    ::1
    This is something I no doubt saw in a tutorial and just implemented.. Well it;s the cause of all of the grieve..   Removing fixed it right away but I’m still curious as to what the heck this is.  It is as I guessed the IPV6 record for the domain and obviously what was in there was a mistake.  So I could spend the time and learn about hwo to properly implement IPV6 domains but after checking on where the adoption rate is( around .40% according to http://www.google.com/intl/en/ipv6/statistics/) I don’t feel the pressing need to dedicate more of my life to this, although I certain will in the future.

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