Posted: Fri May 16, 2025 6:42 Post subject: dd-wrt as DHCP and DNS server R6300 v2
Scenario:
I have a router from my ISP where I can't use a custom DNS server . I don't like this and I'd like to use my own DNS server. The ISP router at least allows me to disable DHCP server on it!
My goal is to use my dd-wrt (v3.0-r44715) as a DHCP and DNS server on my network.
After reading the forum I saw that I should have DHCPd settings under Setup->Basic Setup but I'm not seeing any. I tried both "Gateway" and "Router" Operating Mode, any ideas what should I try next?
Turns out the WiFi must be an AP mode for the DHCP server settings to come up. Odd, but ok, I found it.
Now I'm looking for a way this to only work as a DHCP & DNS server, nothing else. I'm looking for an option to configure what's the IP address of the actual router on the network but haven't found it yet.
Joined: 18 Mar 2014 Posts: 13647 Location: Netherlands
Posted: Fri May 16, 2025 7:38 Post subject:
You are running an old and outdated build, it is highly recommended to upgrade.
Coming from such an old build I would recommend to reset to defaults after upgrading and rebuild from scratch so put settings in manually (make screenshots of your old settings).
Do not restore from an old back up as that is useless (garbage out > garbage in).
Joined: 08 May 2018 Posts: 16113 Location: Texas, USA
Posted: Fri May 16, 2025 15:45 Post subject:
Welcome to the forum!
A little bit of reading from the point of the router database link you posted would've pointed you to the R6300 V2 device wiki (which still needs some further edits), which would've pointed you to the Firmware FAQ, which contains the firmware image download locations for all releases, including current releases. More recently, there was a "latest" folder added, which will send you to the current release, which as of this post is New Build - 05/16/2025 - r61298 (build release thread link).
Thank you for pointing me to the correct location for the latest firmware.
I upgrade it to Firmware: DD-WRT v3.0-r61298 std (05/16/25), though I still see no option where could I specify the router in the DHCP config.
If your ISP doesn't allow you to change the DNS then I would very much doubt
they would allow you to use your own router to connect to them.
I have just changed to full fibre with a new ISP and the router they sent to
me is still in it's sealed box and I am still using my r6300v2 with of course dd-wrt.
I presume you want to use their router for better wi-fi?
Try first just setting up your r6300v2 to connect to your ISP and if it does,
then we can go from there.
It's a 5G/LTE router, I want to use theirs because the one I have has different bands and the speed is much lower (10x) for cellular. A new one costs a few hundred $/€ so I don't want to buy a new one.
Their router has 2 gigabit ports, I can can connect both my computer and my router to it, works with both
Have you tried setting your phone or computer to a static dns such as 1.1.1.1?
This should override your routers dns setting?
You can check in command prompt and type nslookup google.com and enter.
The return first address will be your dns address which was used.
. I don't like this and I'd like to use my own DNS server. The ISP router at least allows me to disable DHCP server on it!
