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DNS fails to resolve w/ 10.6.8

2188 Views 11 Replies Latest reply: May 20, 2013 9:02 PM by Neomoon RSS
TeamHCN Level 1 Level 1 (0 points)
Currently Being Moderated
Nov 27, 2012 1:26 PM

I have a home network consisting of 2 iMacs and 1 Macbook Pro, all running on 5 GHz N-band through an Asus RT-N56U dual-band router. The Macbook Pro and one of the iMacs are fine, however starting several months ago the third iMac began having a problem where it fails to resolve domain names, as many as 3 times a day. All 3 computers have identical network preferences, each with their own static LAN IP.

 

I looked through the Console logs for the problem iMac and found the same entries repeating, which appear to show mdnsResponder crashing:

 

 

mDNSResponder[18]

SendResponses: No active interface 0000000000000006 to send: 0000000000000000 08   41 _afpovertcp._tcp.local. PTR User's\032Computer._afpovertcp._tcp.local.

mDNSResponder[18]

SendResponses: No active interface 0000000000000006 to send: 0000000000000000 08   34 _rfb._tcp.local. PTR User's\032Computer._rfb._tcp.local.

mDNSResponder[18]

ERROR: handle_resolve_request bad interfaceIndex 6

com.apple.usbmuxd[37]

_BrowseReplyReceivedCallback (thread 0x7fff70463cc0): Error doing DNSServiceResolve(): -65540

mDNSResponder[18]SendResponses: No active interface 0000000000000006 to send: 0000000000000000 04   15 User's\032Computer._device-info._tcp.local. TXT model=iMac10,1
/System/Library/CoreServices/Finder.app/Contents/MacOS/Finder[102]BonjourBrowser::DNSServiceQueryRecord returned -65540
mDNSResponder[18]ERROR: handle_resolve_request bad interfaceIndex 6
com.apple.usbmuxd[37]_BrowseReplyReceivedCallback (thread 0x7fff70463cc0): Error doing DNSServiceResolve(): -65540
mDNSResponder[18]SendResponses: No active interface 0000000000000006 to send: 0000000000000000 04   15 User's\032Computer._device-info._tcp.local. TXT model=iMac10,1
mDNSResponder[18]SendResponses: No active interface 0000000000000006 to send: 0000000000000000 08   34 _rfb._tcp.local. PTR User's\032Computer._rfb._tcp.local.
mDNSResponder[18]PenaltyTimeForServer: PenaltyTime negative -154358, (server penaltyTime -58278099, timenow -58123741) resetting the penalty
mDNSResponder[18]ERROR: handle_resolve_request bad interfaceIndex 6
com.apple.usbmuxd[37]_BrowseReplyReceivedCallback (thread 0x7fff70463cc0): Error doing DNSServiceResolve(): -65540
mDNSResponder[18]ERROR: handle_resolve_request bad interfaceIndex 6
com.apple.usbmuxd[37]_BrowseReplyReceivedCallback (thread 0x7fff70463cc0): Error doing DNSServiceResolve(): -65540
mDNSResponder[18]mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) stopping
mDNSResponder[18]mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting

 

I did some Googling on the issue and came up with results similar to my problem, dating back as far as OS X 10.6.5, perhaps even earlier. Several people suggested killing/restarting mdnsResponder as a temporary fix using the following:

 

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

 

This appeared initially to be successful, however it turns out the fix is just that – temporary. DNS still breaks every day, leaving my iMac able to send and receive email, but unable to browse the Internet.

20" iMac Intel i3 3.06GHz 4GB RAM, Mac OS X (10.6.8)
  • tzbikowski Level 4 Level 4 (1,945 points)
    Currently Being Moderated
    Nov 27, 2012 1:27 PM (in response to TeamHCN)

    Hi,

     

    Does the same happen if you put manually your ISP's DNSs into the network card configuration?

    In fact what do you have in your DNS settings for the network interface you use your static IP on?

  • tzbikowski Level 4 Level 4 (1,945 points)
    Currently Being Moderated
    Nov 27, 2012 1:30 PM (in response to TeamHCN)

    also I've just notice the date on some of the logs are from May 2011.

    Misconfigured Time/Date on either the router or the computer may cause such and more issues.

    Can you double check the date/time on your computer and router - so we can get it out of the way.

  • tzbikowski Level 4 Level 4 (1,945 points)
    Currently Being Moderated
    Nov 27, 2012 1:38 PM (in response to TeamHCN)

    So youuse google DNSs - fine. Those MUST be numbers not names.

    Google DNSs are 8.8.8.8 and 8.8.4.4

    can you confirm you have numbers not names in DNSs list?

    Idealy if DNS list has only your router IP so your network can me managed centrally but public ones will work.

  • tzbikowski Level 4 Level 4 (1,945 points)
    Currently Being Moderated
    Nov 28, 2012 2:52 PM (in response to TeamHCN)

    Hi,

     

    Regarding search domains - those are not directly responsible for your internet conectivity.

    You can read what they are here:

    http://support.apple.com/kb/HT4845


    regarding the mdnsResponder

     

    You can try dragging this file to the desktop & rebooting.


    Machintosh HD/System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

     

    This should clear the issue.

     

    Please let me know how it goes.

  • tzbikowski Level 4 Level 4 (1,945 points)
    Currently Being Moderated
    Nov 30, 2012 5:16 PM (in response to TeamHCN)

    Well, good luck.
    Fresh system is always the best way to remove bugs.

  • Neomoon Calculating status...
    Currently Being Moderated
    May 20, 2013 9:02 PM (in response to TeamHCN)

    I'm somewhat new to mac os however I'm having this issue on my MBP. I have a mac mini hard wired and two wireless networks (one g & one n for streaming 1080p to xbmc to my phone & mbp). I am experiancing the same issues as you where DNS stops responding and the mDNSResponder reset only fixes the issue a part of the time.

     

    When I boot camp into my windows partition & can connect to both networks with no issue so the problem does appear to be only with os x.

     

    My question is when you did the re-install did you restore from a time machine backup? Reason I ask is that I'm assuming when you restore a time machine backup the network setting also get restored. I'm just wondering that if any files are corrupted they will get restored therefore briging the issue back?

     

    Thanks

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