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connected to l2tp, lost the whole internet. fun. 😭

Solveddnsroutingvpn8 replies · 265 views · started
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Accepted solution by Dario — lol same thing happened to me for split tunnel setups, the internal subnets must be in the pushed routes (AllowedIPs in WireGuard, push…
  1. Aiden Dalton
    @aiden_night

    weird one. from a coworking space, L2TP connects and then nothing internal resolves:

    If i type the IP address of internal websites directly it sometimes works! But names fail every time. Help me before i start memorizing IP addresses.

    ive also flushed the DNS cache, rebooted my laptop and tried a different browser, just in case 😅 no change. im convinced its something about how names are looked up over L2TP, but i dont know where to look. im about to throw this thing out the window lol

    thinking

    1
  2. Esme Alvarez
    @kernel_bench

    Is this a full tunnel or split tunnel setup??

    4 0 helpful
  3. Joon Ivanova
    @binarysmith-1bp

    been there man following, having the same problem, is vpn even worth bothering with or should i just leave it

    4 0 helpful
  5. Diego J.
    @diegoj220

    separate routing from DNS... try teh internal IP directly: if the IP works but the name fails, its DNS.. ;) check which DNS servers are in use while connected (ipconfig /all on Windows, resolvectl status on Linux, scutil --dns on macOS).

    3 0 helpful
  6. Paula Duarte
    @lambdawrangler-1lh

    hmmm classic ovelrap: your home network uses the same subnet as the office (both 192.168.1.0/24, for example). traffic to internal IPs then stays on ur local LAN. check route print or ip route. the long-term fix is moving the office or VPN range to a less common subnet. worked for me anyway 🤷

    2 4 helpful
  8. Dario
    @darion221
    Accepted solution

    lol same thing happened to me for split tunnel setups, the internal subnets must be in the pushed routes (AllowedIPs in WireGuard, push "route ..." in OpenVPN). If the file share lives in a subnet not in that list, it goes out your normal internet connection instead. hope that helps :)

    1 7 helpful
  9. Aiden Dalton
    @aiden_night
    in reply to @darion221

    @darion221 yesss added the internal DNS server and search domain to the L2TP config. names resolve and internal websites opens.

    11 0 helpful

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