Date: Sun, 03 Apr 2022 21:37:32 -0600 From: freebsd-net@brettglass.com To: freebsd-net@FreeBSD.org Subject: Wireguard, MTUs, and jumbo packets Message-ID: <202204040337.VAA10654@mail.lariat.net>
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Everyone: Would like to use the new Wireguard implementation, but need to know what it does to MTUs. I'd like a full 1500 byte MTU through the VPN tunnel, but this means that the packets that are sent between the client and server have to be BIGGER than 1500 bytes. It takes a special feature to allow PPPoE to negotiate a larger MTU (see RFC 4638), and other PPP-based protocols such as L2TP wont do it at all. But what happens in Wireguard? I can find no documentation on this topic, so assistance would be appreciated. --Brett Glass
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