tun interfaces cannot be put in a bridge because they do not use an
Ethernet-like L2 link-layer header (or any L2 header at all, really;
they're purely L3 interfaces).
You need to use a 'tap' interface instead.
On Tue, Jan 31, 2023 at 1:05 PM Thomas Köller
wrote:
> I am trying to build a VPN
I am trying to build a VPN tunnel through a tun interface created by
sshd. The tun interface is to be added to an existing bridge interface.
For this purpose I created a .network file (see below). However, the
operation fails, without systemd-networkd giving a useful error message
beyond
