Double NAT with backup TMobile internet

[Ellenswamy]

Hell all,

pretty sure I know the answer but going to verify anyways, my primary intent is Xfinity, and my backup is TMobile, with TMobile I use their gateway and they don't have the ability turn off their firewall etc, unless you get a business plan.

question is, when I go to my backup is there any where to put and in a rule and if so how? so that way I can still use vpn etc when double nat'd?

 

[Analog-1]

Nope.

 

[Ellenswamy]

Nope.

that's what I thought, Boo

 

[Analog-1]

If the gateway had a true bridge mode then it would be possible.

 

[Ellenswamy]

If the gateway had a true bridge mode then it would be possible.

right, it does not

 

[RandomUser777]

Hell all,

pretty sure I know the answer but going to verify anyways, my primary intent is Xfinity, and my backup is TMobile, with TMobile I use their gateway and they don't have the ability turn off their firewall etc, unless you get a business plan.

question is, when I go to my backup is there any where to put and in a rule and if so how? so that way I can still use vpn etc when double nat'd?

Use Tailscale to VPN behind CGNAT and/or doublenatting.