Hello,
to provide an easy to use starter to capture traffic on all NICs found, I can successfully get all the interfaces of TSHARK.EXE (the command line version that's automatically installed along with wireshark) with this script:
#include <AutoItConstants.au3>
#include <Array.au3>
$TS_WD = "C:\Program Files\Wireshark"
$TS_exe = $TS_WD & "\tshark.exe"
if not FileExists($TS_exe) Then
MsgBox(48,"Fatal Error","No Wireshark Command