[K12OSN] LTSP server slow or unresponsive when internet connection is not present

[Mathieu Pelletier]

I have an LTSP server with 30 clients attached.  Everything works well, 
except when our internet connection goes down (which happens with some 
degree of frequency in our context).  When there is no access to 
internet from our LTSP server everything becomes really slow until 
eventually the clients just freeze.  I have tried removing GSSAPI 
authentication from SSH which seemed to help, at least now I can ssh 
into the server, whereas before this was not possible when internet was 
down.  I am not sure what is causing this or how I can fix it.  I assume 
it has something to do with DNS, but I am not sure where to start.  Any 
suggestions?

Mathieu Pelletier
Director of IT Development
Theological College of Zimbabwe

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