I am currently working at a customer's setting up and testing a machine. I need local ethernet to the machine so I can test. The machine network is closed and has no access to the internet (non-routable). I am connected to a managed switch in the machine (though a non-managed switch sits between, so my colleagues can have access to).
In order to be able to work at a meaningful speed, I have an LTE stick attached to my laptop so I can have access to the internet (if possible I'd like to share it via a local switch with my colleagues).
I've seen that Windows 10 has an issue with that situation and that I can fix it by setting a registry key "IgnoreNonRoutableEthernet" to 1. Actually once I set a static IP, Subnet and Gateway for my local ethernet adapter, Windows says I'm connected to the internet via the LTE stick.
But when I try to access any website, it just instantly pops up "the server cannot be found". When I deactivate Ethernet, it works.
Anyone got an idea how to fix that? It would be a real setback if I had to deactivate ethernet everytime I need to look up something. I can access the local network (ping works) but it seems like Windows cannot reach any internet-based address. I tried nslookup and set my DNS to Cloudflare's DNS (1.1.1.1). Works until I enable ethernet, then it cannot find the server anymore.