ISTA standalone does not modify env variables but uses relative path setup in ISTAGUI.exe.config , so in theory it should be pointing to the right place. (two key ENET ediabas.ini settings, Interface = ENET, [XEthernet]RemoteHost = Autodetect for a direct connection APIPA) More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.