/etc/resolv.conf with qt extended

[Kishore]

What does the GUI in qt extended use when connecting on wifi?

For me after using the GUI /etc/resolv.conf would always end up empty. ifup 
eth0 does the right thing and populated it correctly. Today used the GUI and 
repeatedly did a "cat /etc/resolv.conf" over ssh. I notice that it does get 
populated correctly but then something happens and its empty.

Any reasoning/fixes for this behavior?
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Cheers!
Kishore