RT-AX5400 Computers not finding each other on the network

[trparky]

Computers on my network can't seem to find each other when I go to the Network page in Windows Explorer. All systems are running Windows 11.

I have noticed this and it could be a contributing factor...

PS C:\Users\trpar\OneDrive\Bitwarden Vault Export Script> nslookup dans-notebook
DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: 2600:1702:50af:2a0f::1

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out
PS C:\Users\trpar\OneDrive\Bitwarden Vault Export Script> nslookup dans-notebook 192.168.1.1
Server: RT-AX5400-4F38.myhomenetwork
Address: 192.168.1.1

Name: dans-notebook.myhomenetwork
Address: 192.168.1.202

Does this make any sense? It seems that the router's IPv6 DNS doesn't know the addresses of the home LAN machines but the IPv4 DNS does. Why? How do I fix it?