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I tried to install ProtonVPN on my Ubtuntu 20.10 via official ProtonVPN documentation. After installation, I noticed ethernet icon appearing on top-right but internet was not working. I then uninstalled protonVPN but still internet is not working even WIFI is connected. There's still ethernet icon top-right. I tried using my phone's internet via USB tethering, I was able to connect tethring but internet was still not wotking.

How can I solve this?

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  • 1
    Recommend you to seek for help from Proton official support as well
    – Emil
    Commented Feb 24, 2021 at 17:46
  • VPNs, in general, mess with IP routing. Look at ip route show. You should have a "default" route pointing to your router.
    – waltinator
    Commented Feb 24, 2021 at 20:44

5 Answers 5

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This question is pretty old but I had the exact same problem with the exact same distro so I'll answer with how I solved it after uninstalling protonvpn. By running

nmcli device

I found out I had two extra connections that had remained there and the system was trying to route through them, so after identifying them I simply did

sudo nmcli connection delete pvpn-killswitch
sudo nmcli connection delete pvpn-ipv6leak-protection

After that rebooting solved everything.

Also, note that there is also a workaround to use protonvpn service if after the installation internet stopped working. Simply run:

nmcli connection show --active

Then,

nmcli connection delete [connection name]

In my case the code was:

nmcli connection delete pvpn-ipv6leak-protection

After that, just open protonvpn and connect normally.

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    solved it by just sudo nmcli connection delete pvpn-ipv6leak-protection Commented Aug 18, 2021 at 14:28
  • 2
    This solved my issue. I think there's a bug with protonvpn
    – asaf92
    Commented Aug 20, 2021 at 10:41
  • 1
    This solved it for me too.
    – nabla
    Commented Dec 4, 2021 at 14:42
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    Me too, thanks so much. Very scary when you can't connect to the internet.
    – P Simdars
    Commented Jun 26, 2023 at 18:48
  • 1
    Amazing; thank you. Protonvpn still seems to have this issue on linux even in mid-2023
    – Matt
    Commented Aug 17, 2023 at 15:25
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I do not know for sure that my problem was related yo yours, but after installing ProtonVPN and connecting to a server, my connection was refused when connecting to any website, despite the fact that I could ping. Well, in my case, I did

protonvpn-cli ks --off

This disables the KillSwitch function. There is a related information here too: https://stackoverflow.com/questions/68229831/protonvpn-broke-my-machine-after-upgrade-to-linux-cli-version-3

and after this I could connect to any server and it could allow me to connect to any web place. Dunno if this is default setup that should be avoided. Never experienced this before.

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  • You could explain that your command disables the kill switch like this post explains it. Also you could try sudo nmcli connection delete pvpn-ipv6leak-protection which is an answer in the same link earlier. Commented Jan 1, 2022 at 21:17
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The official Protonvpn installation page is giving the same solution with a few extras: Remove any leftover files:

rm -rf ~/.cache/protonvpn

And

rm -rf ~/.config/protonvpn
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I'm using Pop_OS!

This used to work for me:

nmcli connection delete ipv6leakintrf0

Sometimes it'll error out saying ipv6leakintrf0 doesn't exist, even though ifconfig sees it, so I perform this guy which works

sudo ip link delete ipv6leakintrf0
0

I faced the blokking of my internet connection as well after installing ProtonVPN. I looked up my connections with command: nmcli device I found ipv6leakintrf0 dummy connected pvpn-ipv6leak-protection Killed the IP6: sudo nmcli connection delete pvpn-ipv6leak-protection Got: Connection 'pvpn-ipv6leak-protection' (Blabla) successfully deleted. After that everthing worked fine. I had the same problem with NordVPN before. The problem seems to stick in the IP6 connection. My Idea is that VPN doesn't work with IP6.

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