nslookup Non-authoritative answer wrong server

I have a fresh install of Ubuntu 18 on a server. I setup a static IP with netplan using networkd as renderer. On my network, I have 4 DNS Server, here the netplan config file:

network: version: 2 renderer: networkd ethernets: ens160: dhcp4: no addresses: [192.X.Y.34/24] gateway4: 192.X.Y.254 nameservers: addresses: [192.X.Y.10,192.X.Y.11,A.B.C.10,A.B.C.11]

I add a A record for xxxx.yyyyyy.com (who pointed to A.B.C.21) on my DNS servers (It's local servers) When I run the command nslookup xxxx.yyyyyy.com, I got the following answer.

Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
Name: xxxx.yyyyyy.com
Address: 192.X.Y.21

So why it's a Non-authoritative answer ? It's on the same network.
Should I add a search in the netplan config with the domain name ?

Btw when i run systemd-resolve --status, i got the good list of DNS Server

... DNS Servers: 192.X.Y.10 192.X.Y.11 A.B.C.10 A.B.C.11

I don't have Network Managerinstalled on the server.

If anyone have an idea to solve this problem :)

Thanks,

1 Answer

"Non-authoritative answer" is expected output when the DNS server that returned the result to you is not directly the authoritative nameserver for that domain.