Nighthawk R8000 goes offline

plemans
Guru - Experienced User
Nov 24, 2021
That gateway is a modem/router/moca adapter combo device.

it causes a double nat which can create some network instability.

A double nat happens when you cascade more than 1 router.
https://kb.netgear.com/30186/What-is-Double-NAT
Fixes? There’s 3 options but only use 1.
1. Put the modem/gateway in modem only/pass through mode. This disables its routing functions.
2. Leave the modem/gateway in router mode but put the Netgears IP address into its DMZ. This forwards the data to the netgear. You can either leave the modem/gateway’s wireless enabled or disabled. Just make sure its using a different wifi channel to prevent interference
3. Put the Netgear into access point mode. This disables its routing functions. Wifi/ethernet still works but it does disable some features.
https://kb.netgear.com/26765/Which-features-are-disabled-on-my-NETGEAR-router-when-it-is-set-to-AP-Mode

Probably the easiest option to to put the netgear in AP mode. But there are drawbacks as outlined above.
- OtisCampbell
  Tutor
  Nov 26, 2021
  plemons,
  
  Thanks for the insight. I went with option 2. It does not appear that the Arris modem router can be put in a modem only mode and I did not like the loss of routing options caused by option 3. I have also turned off the 2.4 and 5.0 channels on the Arris router.
  
  I haven't noticed any loss of function with any of my devices that are connected via wifi or hard wired. I will report back in a week as to whether this solved the problem with wifi dropping.
  
  It looks like in a perfect world I would replace the Arris modem router with a Frontier compatable cable modem. That would save me $10 a month and eliminate any potential double NAT issues.
  - plemans
    Guru - Experienced User
    Nov 27, 2021
    good luck! Keep us updated

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