VPN leak on Xperia 10 III

As per title, I have an issue with the VPN. I was filing a bug report, but I preferred sharing it here first, in case it’s a known problem (or, even better, there’s a known solution).

HARDWARE: Sony Xperia 10 III


I’m using Proton VPN with .ovpn configuration files.

I used the same files with my old Xperia X but I never had any issue. Now, I noticed that when I try to connect to websites (e.g. gutenberg.org) that are blocked here (Italy), I don’t reach them anymore, but I reach the warning page from local authorities.

I checked with ipleak.net and saw that my connection was leaking.

I looked for some information here in the forum, and found this After update to - XA2's VPN says connected but traffic is not going through VPN - due to IPv6

I tried to apply the solution suggested here How can I keep ipv6 disabled? but it didn’t work for me (even after creating the firewall rules suggested in the link, the connection leaked).

Any suggestion would be welcome. Thank you.


Looks like your DNS is leaking and thus name resolution for gutenberg.org redirects to the Italian web page. Your IP address is Dutch and all connections via IPv4 will be routed through the Netherlands so you should check for the DNS server settings pushed from your VPN provider or configured in the .ovpn file.

Yes, I also think itś a DNS problem. Did you download the .ovpn choosing router as platform? As far as I know, DNS is then set automatically in SFOS. When you want to configure a real router, the address is for UDP connections and for TCP connections.
Info from ProtonVPN Team: https://protonvpn.com/support/dns-leaks-privacy
Thank you, Proton!

Than you @nekron, thank you @jolla4ever. I will have a look at the configuration then and see what happens. My scepticism arises from the fact that I changed phone, not files; but I’m also used to the odd quirk, with phones…

Did you manage to solve this? Seems like I have the same issue. Ad blocking VPN not blocking ads - #4 by WT.Sane

Would maybe manually setting a DNS help? But in SF it’s not as simple a just adding one in /etc/resolv.conf.

I tbink it has much to do do with jail… Very much.
Welcome virtualization!!!

Hi, @klarre. I had a few issues with my phone recently, and unfortunately it’s at Sony’s at the moment. I do not remember very well if I had found a solution or not: I was doing different things at the same time. A few things I kinda remember are that:

  • the leak happened only with Firefox, but not with Jolla Browser (I believe);
  • I edited the .ovpn file by either commenting or adding a line, but I do not remember what.

I’ll try to come up with something more, but as long as I do not have the phone it’s going to be difficult.

Maybe something something “block-outside-dns”? Try with or without it… But it’s a shot in the dark.

I cannot reproduce this issue anymore after upgrading to 4.5.

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Yep. I updated yesterday and checked, and I can confirm it too: as written in the release notes, solves the issue. Awesome!

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