A workaround for Windows 10 ARM64 thinking the network is offline

[HenkPoley]

• You can disable NCSI throught group policy:

1. Launch the editor by typing in gpedit.msc in Run.
2. Navigate to Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication Settings
3. Double-click Turn off Windows Network Connectivity Status Indicator active tests and then select Enabled. Click Ok.
4. Now open the Command Prompt and enter gpupdate /force to enforce the changes made to the Group Policies.

https://github.com/henrypp/simplewall/blob/master/README.md#q-why-does-my-network-icon-have-an-exclamation-mark

You might additionally need to set DNS to 8.8.4.4 & 1.1.1.1 if you're hit with the SLIRP IPv6-DNS address mangling bug.