Buggy MTU with Wireguard (attached pcapng)

[alpha_one_x86]

Hi,

I have wireguard interface "veth", and my real interface "eth0".

No bug with openvpn, but with wireguard on IPv4 for https, I have bug, 
see the attached file, the returned data is 3300byte, then Destination 
unreachable (Fragmentation needed).

Bug into wireguard? How fix this?

The ok.pcapng it's same https download do with openvpn.

Cheers,
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