Change custom DNS to default provided by ISP

[RooterH3lzz]

Hello,
I have no idea about setting up openwrt, as it was done by someone else.
At present, cloudfare dns servers are setup, which is giving lot of issues.

Can someone guide to change the same to ISP provided dns ?
Request to guide, which links to follow in openwrt.

Thanks.

[eduperez]

In the network > interfaces configuration page, there should be a WAN interface, configured with option "Use DNS servers advertised by peer" disabled; enable it, then apply the changes.

[timur.davletshin]

What kind of issues do you get? Apart from possible slower responce (which is to be measured) and possible privacy issues (do you care more sharing your DNS requests with Cf or ISP?) it's hard to imagine other "problems".

[RooterH3lzz]

This are my wan settings:

[RooterH3lzz]

Slower response is way too much, it takes upto 30 seconds to open websites.

[RooterH3lzz]

Will try changing same to google dns 8.8.8.8 and 4.4.4.4

[frollic]

try setting the ISP DNSes manually in Windows 1st, see if there's any actual improvement.

[RooterH3lzz]

Thanks for suggestion, should have tested this first.. There is massive improvement when changing dns settings in local windows 10

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek Gaming 2.5GbE Family Controller
   Physical Address. . . . . . . . . : 58-11-22-95-01-28
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::bc62:3e01:5010:3a51%7(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.163(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 5 December 2023 09:30:25
   Lease Expires . . . . . . . . . . : 6 December 2023 01:56:56
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 257429794
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2B-C9-88-9A-58-11-22-95-01-28
   DNS Servers . . . . . . . . . . . : 8.8.8.8
                                       4.4.4.4
   NetBIOS over Tcpip. . . . . . . . : Enabled

Changing to ISP dns as well, there is performance gain (but not like above google dns)

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek Gaming 2.5GbE Family Controller
   Physical Address. . . . . . . . . : 58-11-22-95-01-28
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::bc62:3e01:5010:3a51%7(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.163(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 5 December 2023 09:30:25
   Lease Expires . . . . . . . . . . : 6 December 2023 02:01:20
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 257429794
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2B-C9-88-9A-58-11-22-95-01-28
   DNS Servers . . . . . . . . . . . : 103.88.220.245
                                       103.88.221.245
   NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Wi-Fi:

[frollic]

set them in the DHCP-Options field, as 6,8.8.8.8,4.4.4.4, do a DHCP renew afterwards, on your client(s).

[RooterH3lzz]

Thanks, I have 2 routers setup
One is main hall running tplink gui using ISP dns servers

This ROUTER is working as AP mode with openwrt ui running cloudfare dns.

[frollic]

no idea how to set it up on the tp-link, with stock fw, but resetting it would probably help.

unless you want to double NAT, and use the WAN port on the openwrt router.

[RooterH3lzz]

I can setup custom dns in tplink router (ui for novice users like me)

But not sure, how to remove this cloudfare dns from openwrt or reset dns settings and let everything to be obtained from tp link router.

[frollic]

if your openwrt device is an AP, it's DHCP should have been disabled,
and whatever DNS setting it has, shouldn't affect the clients.

[RooterH3lzz]

DHCP is disabled in 2nd router using openwrt.

Help to access 2 dfferent routers at same time on network, 1 using stock firmware other using openwrt?

Hello @jc1685 I tried tested both routers MercSys Mr90 and Archer ax73. Found Archer Ax73 connects even to furthest room corners. I have decided to keep and use same. Can't I install any custom ROM on same.

Is running this way.

[frollic]

all good, just saying the DNS info doesn't come from the openwrt router.

[RooterH3lzz]

Thalassemia @frollic
For helping soo far, main router is using ISP dns.

Not sure where this custom cloudfare dns coming from.
I changed my local pc dns to Google.

[frollic]

that looks like the wan side....

[RooterH3lzz]

You are absolutely correct, changed settings in 2 places in router.

Using goggle dns in both places now.