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Comment by aaronmdjones

1 year ago 

    # setup a 8020 MTU on wg0 interface to account for the 80 bytes wireguard headers overhead
    # 20-byte IPv4 header or 40 byte IPv6 header, 8-byte UDP header  4-byte type, 4-byte key index, 8-byte nonce, 16-byte authentication tag)
    /sbin/ip li set dev wg0 mtu 8020

Shouldn't that be 8920? To go with the 9000 byte MTU on the outer interface above it.

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aaronmdjones

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