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| author | Linus Färnstrand <linus@mullvad.net> | 2024-10-17 12:58:24 +0200 |
|---|---|---|
| committer | Linus Färnstrand <linus@mullvad.net> | 2024-10-17 14:13:52 +0200 |
| commit | 9ef1ed0f0bce65177d1e72041179f849cd6bcbf0 (patch) | |
| tree | 34ec1bfd8a691acfd38ffa20d7b738a8a2f86f80 /talpid-wireguard/src | |
| parent | 7c40bce181c1857b749b88d61ce9999440d7379f (diff) | |
| download | mullvadvpn-9ef1ed0f0bce65177d1e72041179f849cd6bcbf0.tar.xz mullvadvpn-9ef1ed0f0bce65177d1e72041179f849cd6bcbf0.zip | |
Document relationship between ephemeral peer MTU fixes
Diffstat (limited to 'talpid-wireguard/src')
| -rw-r--r-- | talpid-wireguard/src/ephemeral.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/talpid-wireguard/src/ephemeral.rs b/talpid-wireguard/src/ephemeral.rs index b00babf781..5440a142f6 100644 --- a/talpid-wireguard/src/ephemeral.rs +++ b/talpid-wireguard/src/ephemeral.rs @@ -34,6 +34,9 @@ pub async fn config_ephemeral_peers( tunnel.get_interface_name() }; + // Lower the MTU in order to make the ephemeral peer handshake work more reliably. + // On unix based operating systems this is done by setting the MSS directly on the + // TCP socket. But that solution does not work on Windows, so we do this MTU hack instead. log::trace!("Temporarily lowering tunnel MTU before ephemeral peer config"); try_set_ipv4_mtu(&iface_name, talpid_tunnel::MIN_IPV4_MTU); |