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Virtual private networks / Re: Lost TCP-packet over Wireguard tunnel in TLS handshake.
« on: September 14, 2022, 08:24:59 pm »
I encountered the same problems and after some time figured out that it was a problem with my MTU settings.
Wireguard adds a layer of encapsulation around your packets,
which the wireguard interface accounts for by setting a lower MTU than the default 1500 in the default config.
In my case though, my provider tunnels my IPv4 over IPv6 to save v4 Addresses (DSLite).
This leads to me having a lower than usual MTU, which i need to account for in my wireguard.conf in the interface stanza.
For me
MTU = 1392
seems to work fine.
Wireguard adds a layer of encapsulation around your packets,
which the wireguard interface accounts for by setting a lower MTU than the default 1500 in the default config.
In my case though, my provider tunnels my IPv4 over IPv6 to save v4 Addresses (DSLite).
This leads to me having a lower than usual MTU, which i need to account for in my wireguard.conf in the interface stanza.
For me
MTU = 1392
seems to work fine.