Hello,

I have noticed that my ER605 v2 router might be blocking or interfering with direct DNS queries for the Root Zone (.), as I consistently receive timeout responses, regardless of the client I use or the DNS server query.

 Regular domain queries (e.g. google.com) work fine.

 Queries for the Root Zone ( . ) always time out.

I´d like to ask if anybody else is experiencing the same issue. You can reproduce it by running the following command in CMD/Powershell on a Windows client:
nslookup -type=NS . 1.1.1.1

Expected behavior: The DNS resolver should return the 13 authoritative root name servers.

Here´s my result:

When querying a domain like google.com, everything works as expected::

This problem is especially frustrating when running an own Unbound resolver, since it relies on direct queries to the root name servers to function properly.

Has anyone else encountered this issue? Is this a known limitation or maybe a bug?

Thanks!