Bidirectional WAN egress (Country-to-Country ISP)

Router
1

Hi,

From what I read and have experimented with, I think this may not be supported but before I throw in the towel, can anyone advise if my intent here is possible? (And a guide if so would be super too)

  • I want to setup two beryl-ax devices, one in CountryA and one in CountryB.
  • They are both connected to an ISP’s modem/router and advertise WiFi.
  • Clients connected to CountryA’s WiFi egress their internet traffic through CountryB’s ISP
  • Clients connected to CountryB’s WiFi egress their internet traffic through CountryA’s ISP
  • LAN access (CountryA accessing CountryB’s LAN) is not a requirement

I have attempted this with tailscale but can only get one CountryA|B→CountryB|A type egress to work. I.e.: simultaneous bidirectional access CountryA←→CountryB doesn’t work.

Thanks very much.

2

Hi

Does either end have a public IP address?
It seems achievable via WireGuard, but I haven't had time to test it specifically yet.

4

No. They are both behind a NAT’d ISP router. The goal is just to have a dedicated WiFi for the other country, so in/country egress is the default for all other connections.

5

Then should be no easy way to do this.
As you mentioned, the Tailscale also could not work in this case - it doesn't support to choose another exit node on a node advised as exit node.

6

Thanks. I’m going to try zeroTier instead.

8

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