random42
Level 1 (0 points)

Q: why do OS/X apps fail when DNS is working fine?

This is truely driving me nuts and based on the number of google hits I'm not alone.

 

Scenario: browser stops working

Go to shell:

$ ping some.host - hangs

$ host some.host - works fine

$ dig some.host - works fine

$ dig -x IP - works fine

$ ping IP - works fine

$ ping some.host - hangs

 

# killall -HUP mDNSResponder

 

makes no difference

 

# dnscacheutil -flushcache

 

makes no difference

 

Everything associated with DNS seems fine, so obviously OS/X apps don't use DNS directly...

what do they use ?

 

There must be a better way than rebooting the box every few days?

Posted on Sep 5, 2013 2:12 PM

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random42

Q: why do OS/X apps fail when DNS is working fine?

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  • by MrHoffman,

    MrHoffman MrHoffman Sep 22, 2014 3:15 PM in response to applcola
    Level 6 (15,627 points)
    Mac OS X
    Sep 22, 2014 3:15 PM in response to applcola

    Please start your own thread, as this question is headed in a different direction from the base question, and some of the details here are already very different from the base question.

     

    OS X uses a common resolver for DNS and mDNS.

     

    Could you elaborate on "Corporate DNS uses LDAP authentication"?

     

    Potential workaround: use the FQDN for the printer.

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