Fresh install as a server: No response from server
We setup nextdns on an ubuntu machine as router/server mode.
nextdns status
runningnextdns version
nextdns version 1.43.5
We configured a static block domain in our profile and it seems to work fine from the ubuntu machine:
nslookup ebay.ch
Server: 127.0.0.1
Address: 127.0.0.1#53Non-authoritative answer:
Name: ebay.ch
Address: 0.0.0.0
Name: ebay.ch
Address: ::
If we resolve something else, it resolves fine and we can see the domain in the log of the management web interface online.
nslookup facebook.com
Server: 127.0.0.1
Address: 127.0.0.1#53Non-authoritative answer:
Name: facebook.com
Address: 157.240.17.35
Name: facebook.com
Address: 2a03:2880:f15b:83:face:b00c:0:25de
So we are sure that the link from the ubuntu machine to the nextdns cloud works fine. But the problem is, if we try to resolve something from the client, we get the response that the server could not resolve the domain.
C:\Users\userA>nslookup
> server 172.16.20.168
Standardserver: [172.16.20.168]
Address: 172.16.20.168> google.com
Server: [172.16.20.168]
Address: 172.16.20.168*** google.com wurde von [172.16.20.168] nicht gefunden: No response from server.
So this is not a timeout but a precise response from the server. If the DNS service would not run on the ubunutu box, we would get timeouts and retries. Strange thing here is, that the DNS service is only listening on the loopback IP address and not the IP of the interface ens192.
ss -tulw | grep domain
udp UNCONN 0 0 127.0.0.1:domain 0.0.0.0:*
udp UNCONN 0 0 127.0.0.54:domain 0.0.0.0:*
udp UNCONN 0 0 127.0.0.53%lo:domain 0.0.0.0:*
tcp LISTEN 0 4096 127.0.0.1:domain 0.0.0.0:*
tcp LISTEN 0 4096 127.0.0.54:domain 0.0.0.0:*
tcp LISTEN 0 4096 127.0.0.53%lo:domain 0.0.0.0:*
So what are we missing here?
3 replies
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Did you set “setup-router” configuration directive to true?
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So i was installing it as a router with this config lines:
sudo nextdns install \ -profile <your profile id> \ -report-client-info \ -setup-router
But you are right, if i check the configuration, the setup-router flag was set to false. i changed it to true and restarted nextdns by issuing nextdns stop and nextdns start but somehow i have the same behaviour still. No response from server when i try to querry from a client. This is the current config:
root@dns01:~# nextdns config list
cache-max-age 0s
detect-captive-portals false
bogus-priv true
debug false
profile 4xxxx4 <--- hidden
hardened-privacy false
timeout 5s
setup-router true
cache-size 10MB
max-ttl 0s
report-client-info true
mdns all
use-hosts true
auto-activate true
listen localhost:53
log-queries false
discovery-dns
control /var/run/nextdns.sock
max-inflight-requests 256Anything else wrong on this config?
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After a complete reinstall of the OS and nextdns, everything worked fine on the second try. Dont know what went wrong on the first try, but im glad it works now.
Content aside
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