Hi,
On Wed, Aug 23, 2023 at 04:58:40PM +0200, Marek Küthe wrote:
> PPPoE adds 8 bytes of overhead so that an MTU of 1432 can be used. I
> also have to do this at home with my DSL line for example.
> The MTU should be set on each side (on both peers) for this to work.
Oh, I just realized I used the 1432 MTU in my earlier reply based on
Marek's math but since Luiz's underlay network is IPv6 this is not actually
correct. MTU=1440 is only correct on top of IPv4, for IPv6 the "optimal"
MTU is 1420 so with PPPoE involved that's MTU=1412.
1500 Ethernet payload
-40 IPv6 header
-8 UDP header
-32 Wg header
-8 PPPoE
===================
1412 wg tunnel MTU
--Daniel
