Nested Wireguard tunnels not working on Android and Windows

[mikma.wg at lists.m7n.se]

On 2021-03-01 21:09, i iordanov wrote:

> Hi Frank,
>
> On Mon, Mar 1, 2021 at 9:42 AM Frank Carmickle <frank at carmickle.com> wrote:
>> Maybe it's a bug and not a feature? It seems to me that you would have no way of setting the MTU on the inner tunnel.
> That's true - other than inefficient packet fragmentation, is there
> anything else that would be an issue?
It's possible to configure the MTU for each route on Linux. (Obviously 
you can't use the extremely simple wg-quick script for this.)
>
>> Is there a reason why you can't try multiple interfaces?
> I cannot bring up more than a single interface on Android. I am not
> sure about interface management on Windows with wg.exe, but
> wireguard.exe certainly does not permit multiple interfaces to be
> brought up.

The WireGuard app on Android also can't use a VPN address as the source 
of WireGuard packets. Only non-VPN addresses are supported.

Which means currently the WireGuard app on Android can't be used for 
nested tunnels.