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wireguard-go/src/tun.go
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package main
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/*
* The default MTU of the new device must be 1420
*/
const DefaultMTU = 1420
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type TUNDevice interface {
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Read([]byte) (int, error) // read a packet from the device (without any additional headers)
Write([]byte) (int, error) // writes a packet to the device (without any additional headers)
MTU() (int, error) // returns the MTU of the device
Name() string // returns the current name
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}