Mt6000/Flint 2 Gateway to Linux (ubuntu 24.04)

[TheLedZepplin]

Hi, I am running TS 1.86.0 on kernel 5.4.238 as the router for my home LAN and trying to use the exit node on TS 1.84.0 at the 'office' which is a Linux VM (Ubuntu 24.04) in Azure and has a working exit node for any device client (macOS, iOS, AppleTV, Windows all work fine).

I tried the web interface configuration and all is green, but all network traffic, verified with tracert, stops dead at the exit point. Tried the DNS override thing, didn't make a difference. I get name resolution in SSH and traceroute stops cold at the exit node IP address or doesn't reach it I suppose.

I tried the Tailscale OpenWRT wiki configuration and nothing worked. I had to back out.

Is there something I need to do on the exit node to allow traffic from another router that is totally not a problem when connecting from a device with the app installed?

I can give the wiki article another go, but I would want to know how to make sure it's in a ready state before I do that because last try failed big time.

[9b9e69c2-4b75-4420]

I don't use TailScale but it's probably due for an update. Beyond that there may be a script that needs tweaking or an addition to your /etc/rc.local or crontab. If you're using Ubuntu then you should translate that cronjob to a SystemD .timer:

Script: Update Tailscale on (nearly) all devices

Hi there some people wonder how to update the pretty old Tailscale version on devices like the Flint or Flint2. For your convenience, I created a script to automate this process. [asciicast] Permanent feature I added the option to make all changes permanent. The script therefore only needs to be executed once, the effects are then permanent. Even across firmware updates. On the downside, it might create trouble when you flash a way older firmware. Make sure to use --restore before. Yo…

Tailscale 'Exit Node' on GL.iNet Routers?

An alternative way of enabling the exit node mode without editing the start script or running frequent cron commands. Go to Lucy then System->Startup->Local startup Enter above the exit 0 line: ( sleep 60; tailscale set --advertise-exit-node ) & This will allow the router to start all processes, including Tailscale connection and, after 60s, will set the flag --advertise-exit-node. This solution persists after the router updates.

Brume 2 as a Tailscale exit node

It’s probably not the most ideal solution but I have the following scheduled task in LUCI scheduled tasks. */1 * * * * sudo tailscale up --advertise-exit-node --advertise-routes=192.168.1.0/24 --snat-subnet-routes=false --accept-routes

[bruce]

Hi,

May I know if the ping 8.8.8.8 or ping www.google.com is reachable?
Try curl https://ip.gs and curl https://ip.me

@TheLedZepplin

I get name resolution in SSH

Generally there should be no need to configure the exit node (as long as ubuntu is enabled and hosted as an exit node, and approve is used as an exit node on the Tailscale dashboard). In the description above, we know that other devices such as Mac OS/iOS/Windows is able to use this exit node and work fine.

May I know if MT6000 subnet is already approved in the Tailscale dashboard? The MT6000 also have to approve subnets when it enables exit node.

@TheLedZepplin

Is there something I need to do on the exit node to allow traffic from another router that is totally not a problem when connecting from a device with the app installed?

[TheLedZepplin]

Hi Bruce, how do you want me to test the pinging and Curl? With Tailscale turned on but the exit node NOT selected? That works fine, I can tell you. When the node IS selected, everything stops. When the node is not selected, all traffic is routing out the WAN connection direct to internet.

[bruce]

1. May I know if MT6000 subnet is already approved in the Tailscale dashboard? The MT6000 also have to approve subnets when it enables exit node.

2. Try modifying the Firewall rule of tailscale0:
   

   

[sacripantas]

@TheLedZepplin - have you been able to resolve this issue?

I am having the same issue with an Ubuntu server being configured as exit node. I can use that exit node from my Windows device or phone with no issues. However, when I set Ubuntu as custom exit node from Flint 2 router, it does not work.

I don’t think this is a firewall issue with Flint 2, because when I set another custom exit node that’s not Ubuntu it works just fine.

[bruce]

Try modifying the Firewall rule of tailscale0: enable masquerade