I encountered something I don’t quite understand, and I was hoping someone could enlighten me.

I set up Tailscale on my router with subnets, so I could remotely access my home network. This worked great. Then, at home, I was happily browsing the internet on my main PC, and decided to dial into another machine on my network. It couldn’t access it at all. Disconnecting Tailscale on my main PC restored lconnectivity.

I don’t understand what is happening here- the only thing I can think of is that my internet traffic was being routed through Tailscale, but I don’t have an exit node.

TL,DR: home PC sees Internet but not LAN when connected to Tailscale, why and how fix?

  • gazter@aussie.zoneOPEnglish
    1·
    18 hours ago

    I kind of follow what you’re putting down.

    I am not using an exit node. How do I go about splitting my routes?

    What I want to achieve is ‘normal’ access for within the lan, as well as remote access over tailscale for things I cannot run tailscale on.

    • just_another_person@lemmy.worldEnglish
      11·
      17 hours ago

      Tailscale is a group of clients on a Tailnet which are all equal, unless you tell it otherwise. That means you need to set the client you installed on your router as a subnet router.

      Even then, if you’re not familiar with networking, you’ll probably have duplicate routes if you’re not paying attention. The other option is to just install Tailscale on each server you want access to.

      • gazter@aussie.zoneOPEnglish
        1·
        15 hours ago

        The router is set as a subnet router, that is how I am able to access other machines on my lan remotely.

        I don’t want to, and sometimes can’t, install tailscale on every device I want remote access to.

        So I may have duplicate routes- Does that explain the behaviour in my original post? And how would I go about avoiding that?

        I could turn off subnet routing, and only turn it on when needed, but I’ll be putting up a bunch of other services that will want to talk to each other- I’m assuming this will break whenever I turn subnet routing on.

        • just_another_person@lemmy.worldEnglish
          1·
          14 hours ago

          Yes, if Tailscale on your router is advertising routes, and your other devices while connected to Tailscale are picking up those advertised routes, they won’t be able to figure out how to get to your local network devices if both things are advertising the same routes.