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On Sat, Feb 12, 2011 at 23:44, Thomas Harning Jr. <> wrote:
> Let alone a way to define "default network interface".  Or is there?
> Say I have 2 NICs, which one is default?

The one which is associated with a default route is a default interface.
On Linux one can get it via "route -n". From Lua one can use
os.popen("route -n") and then parse the line with destination
(default route) and extract the corresponding interface name.