X50 does not provide WiFi users the DNS received when connecting to an OpenVPN server
I have added an OpenVPN client, whose server provides its DNS, which is only accessible via VPN.
Although, after connecting to the OpenVPN server, the router must use the DNS, which is specified in the settings of the server and the OpenVPN client, which must be used after the connection is established.
X50 PoE clients receive a DNS server provided by the ISP.
Because of this, the domains I need will not be resolved. How do I configure that when connecting to the OpenVPN server, clients are given OpenVPN DNS or the router's DNS is broadcasting requests to the DNS of the OpenVPN server?
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@iplr Hi, thank you very much for the feedback.
Have you tried to open the .ovpn file via Notepad and manually add the following lines:
dhcp-option DNS <primary_dns_server_ip_address>
for example:
dhcp-option DNS 8.8.8.8
dhcp-option DNS 8.8.4.4
Wait for your reply.
Best regards.
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@David-TP Thank you for looking for a solution.
No, I haven't tried that. But as I initially described, the prerequisite is to use DNS, which provides the OpenVPN server for its clients.
If it is not entirely clear why this is, then the DNS server from the OpenVPN server resolves, in addition to public domains, private domains as needed.
Anyway, since OpenVPN transmits the DNS server usage setting to the client, the router must broadcast it to its clients.
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Hi, could the extra command lines force the selected VPN Clients to use the DNS servers of the OpenVPN server?
If possible, can you help me run a simple test:
- Configure the computer to use the same
.ovpnfile to connect to the OpenVPN server directly - Check the used DNS resolver on the computer when accessing the domains.
I checked with the senior engineer, and he thought it was because the OpenVPN server wasn't properly configured to push its DNS servers to the clients. He didn't explain too much, but suggested extra command lines might help to update the DNS servers.
Thank you very much.
Best regards.
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@David-TP thank you for your support.
I tried connecting from a computer using the same ovpn-file without changes. Of course, after the connection is established, the DNS servers are changed on the computer and all the necessary and specially defined host-names are resolved by the DNS server, which is installed by the OpenVPN server.
Here is a part of the connection log from the computer:
2025-09-27 11:24:49.051543 PUSH: Received control message: 'PUSH_REPLY,route 10.30.0.0 255.254.0.0,dhcp-option DNS 10.29.0.1,block-outside-dns,route-gateway 10.29.0.1,topology subnet,ping 15,ping-restart 30,route 103.21.244.0 255.255.252.0,route 103.22.200.0 255.255.252.0,route 103.31.4.0 255.255.252.0,route 104.16.0.0 255.248.0.0,route 104.24.0.0 255.252.0.0,route 108.162.192.0 255.255.192.0,route 131.0.72.0 255.255.252.0,route 141.101.64.0 255.255.192.0,route 149.154.160.0 255.255.240.0,route 162.158.0.0 255.254.0.0,route 172.64.0.0 255.248.0.0,route 173.245.48.0 255.255.240.0,route 185.76.151.0 255.255.255.0,route 188.114.96.0 255.255.240.0,route 190.93.240.0 255.255.240.0,route 197.234.240.0 255.255.252.0,route 198.41.128.0 255.255.128.0,route 34.0.0.0 255.255.0.0,route 34.1.224.0 255.255.224.0,route 35.207.0.0 255.255.0.0,route 35.212.0.0 255.252.0.0,route 35.217.0.0 255.255.192.0,route 35.219.224.0 255.255.224.0,route 66.22.192.0 255.255.192.0,route 8.47.69.0 255.255.255.0,push-continuation 2'
With this command, the server dictates to the client to install DNS: dhcp-option DNS 10.29.0.1
The X50 may be accepting this command. But the problem is that the DNS for the X50 clients does not change after the OpenVPN connection is established, but must be sent to the DNS server that was received upon connection.
Other routers provide clients with a DNS server via DHCP that points to the router itself. And after connecting to OpenVPN, routers begin to broadcast DNS requests from clients to the DNS server received from OpenVPN.
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While we wait for David could you please refer to this link to help me submit the Deco APP log:
(Please leave me the ticket ID after submitting the App feedback. Thank you in advance.)
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