I’m using Pop!_OS 20.04. Until now I’ve been using wireguard conf files that I set up manually with nmcli and that works fine, but I though I’d give the linux app a try, mainly to be able to quickly switch servers without needing to download a new conf file each time.
My issue is I have to set the wireguard connection MTU to 1400 on my network. With the default value of 1420, connections are always timing out and I can’t get any site loaded on Firefox.
Now, I can run ip link set from terminal and change it after the app creates the proton0 interface, and that’s a workaround, but is there some way to change the MTU parameter for all connections?
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Seems there is already a feature request open for this issue, please vote for it if it’s relevant for you as well. https://protonmail.uservoice.com/forums/932836-proton-vpn/suggestions/48509147-permanent-mtu-setting-for-wireguard-in-protonvpn