I cannot confirm this behavior. With a router running FRITZ!OS:7.57 configured to use Google's DNS (in the router only) I get the following on Windows 10 > n

I cannot confirm this behavior. With a router running FRITZ!OS:7.57 configured to use Google's DNS (in the router only) I get the following on Windows 10 > nslookup google.com Server: fritz.box Address: fd00::[redacted] Non-authoritative answer: Name: google.com Addresses: 2a00:1450:4001:828::200e 142.250.181.238 Update: the connection does have the DNS suffix, so according to the superuser answer linked in OP (which is the first result when looking up what a DNS suffix is), it should get appended to lookups on windows, but it looks like it isn't in my case. > ipconfig [...] Connection-specific DNS Suffix . : fritz.box