WireGuard over WireGuard

[Jason A. Donenfeld]

On Wed, May 6, 2020 at 5:28 PM John Lauro <johnalauro at gmail.com> wrote:
>
> Wireguard is defaulting to 1420 MTU, the ethernet adapter is 1500 MTU,
> and I have IPv6 completely disabled.
>
> Can/should the MTU of wireguard be bumped to 1440?

You could if you wanted. But if you don't do it perfectly on all sides
with total uniformity and clearheadedness about your network design,
you'll run into subtle problems.