I've recently installed Debian 8 (Jessie) and I'm having trouble with DNS resolving in a particular network configuration: I must connect to 2 different networks (1) ethernet and (2) wireless.
Each network has it's own DNS servers and here lies the problem. When the system is asked to resolve a URL, it only uses the first DNS server (I have 3, and some are intranet-specific, while other are internet-specific).
Is there a configuration to force DNS resolution on all 3 servers (or resolve in cascade - e.g. if the first fails, try the second, etc..) ?