https://bugs.kde.org/show_bug.cgi?id=403347
--- Comment #4 from Bruce Anderson <banderson19...@san.rr.com> ---
(In reply to Rokas Kupstys from comment #3)
> `nmcli connection up wg21` also kills internet access. Think it is issue
> with networkmanager-wireguard plugin?
Yes, I suspect it is. As an explanation why, the nm-plasma app is really just a
user interface that sits on top of Network Manager (including
networkmanager-wireguard) which does all the actual work of interacting with
the OS networking layer.
>From looking at the output, I'm not sure that it is the "Table = off" itself
that is the problem. I know that in NetworkManager, the "PostUp" and "PreDown"
are not handled quite the same way that they are handled in wg-quick so it
*may* there that the problem lies.
There are a few things I can suggest you try.
1) Try adding only one of the routes and see what happens. I know this isn't
what you want to do but it might give another data point for debugging.
2) If 1) works, you might be able to put both of the 'ip route add ...'
commands into a shell script and put that as the PostUp command.
3) (and this is how I add extra routes although not with Table = off): look
into the use of NetworkManager's dispatcher scripts. Reading the NetworkManager
man page will give you details about this. Personally, I created the file
/etc/NetworkManager/dispatcher.d/vpn-static-links which contains:
=============================
#! /bin/bash
DEVICE="$1"
COMMAND="$2"
if test ${COMMAND} == "vpn-up" ; then
/bin/ip route add 107.16.144.70 via 192.168.1.1 dev eth0
/bin/ip route add 166.16.100.1 via 192.168.1.1 dev eth0
fi
==================================
Personally I think the third method is preferable to using the WireGuard PostUp
and PreDown configs because as long as you are using NetworkManager, it handles
things in a common way independent of the VPN protocol used. That way if I
connect through an openVPN link or through a WireGuard link it will add the two
routes either way.
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