[lug] Debian App DNS Issues

John Starkey jstarkey at breezedev.com
Wed Oct 29 16:41:27 MDT 2008

Zan Lynx wrote:
> I had a problem recently on a Debian server with very slow SSH
> connection start and it turned out to be caused by mdns (multicast DNS)
> which is provided by the Avahi daemon.  In my case the problem was Avahi
> failing a lookup and timing out, but possibly you have the mdns line in
> your /etc/nsswitch.conf but uninstalled Avahi?
That sounds like it's getting closer to what I remember with regard to 
the package I installed. I gave this a try and it didn't work:

 From nssswitch.conf I changed:

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4


hosts:          files [NOTFOUND=return] dns

and restarted Thunderbird and it won't resolve hostnames. I set the 
nsswitch.conf file back to the way it was and checked that avahi was 

ps aux | grep avahi
avahi     3374  0.0  0.0  28632  1512 ?        Ss   13:40   0:00 
avahi-daemon: running [desk1.local]
avahi     3375  0.0  0.0  28504   504 ?        Ss   13:40   0:00 
avahi-daemon: chroot helper

And it didn't fix the issue.

Thanks for the suggestion, though.


John Starkey
I just know I'm a better manager when I have Joe DiMaggio in center field. --Casey Stengel

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