i'm trying to change my DNS Sever to work with my raspberry pi 4 but i keep getting this error "internal fail! fail to make the requested change"why can't i simply change this?!C6300 Firmware VersionV2.01.26

Well all FW for Cable ISPs has a hand in wnat NG gives them so ISP may have there own modifications before pushing out to users modems. One reason why I prefer modem only units then install a external wifi router. More control over what ISPs don't need to have. :smileywink:

Can't change DNS servers on Netgear C6300

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antinode
Guru
Jul 08, 2020
> Model: C6300|AC1750 Cable Modem Router Docsis 3.0

   C6300[v1] or C6300v2? Look for "Model" on the product label.

> Can't change DNS servers on Netgear C6300

   "Can't change DNS servers" to _anything_ else, or only to some device
on your LAN?

   Netgear router firmware on multiple models has been reported to be
unwilling to accept a DNS server with a LAN-subnet IP address.

   I'm unaware of a work-around.
- bradleyakapatty
  Aspirant
  Jul 08, 2020
  its the C6300 V1 Because it doesn't say V2
  and if thats the cast i guess i wasted $200 on this piece of S***!
  - FURRYe38
    Guru - Experienced User
    Jul 09, 2020
    Disconnect the COAX cable from the modem. Factory reset the them and setup from scratch. Go in with a PC and web browser and see if you can change the DNS addresses. Sometimes DNS maybe controlled by the ISP and they put restrictions on this. Review the user manual about changing DNS addresses.

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Can't change DNS servers on Netgear C6300