I have a .NET program running on Ubuntu via Mono 2.10
The program downloads a webpage via an HttpWebRequest every minute or so which works fine most of the time:
I know this is an old post, but was facing the same error, so thought to share the solution.
This is in line with my ans on :
System.Net.WebException: Error: NameResolutionFailure when Calling WCF Services throwing exception in mono android application