tunnel

type Handler interface {
	// PhyToVirt converts a physical frame to a virtual frame typically by performing decapsulation.
	// Returns the length of the resulting virtual frame.
	PhyToVirt(phyFrame, virtFrame []byte) int
	// VirtToPhy converts a virtual frame to a physical frame typically by performing encapsulation.
	// Returns the length of the resulting physical frame.
	VirtToPhy(virtFrame, phyFrame []byte) (length int, loopback bool)
	// ToPhy is called periodically to allow the handler to send
	// scheduled frames to the physical interface, e.g. keep-alive packets.
	// Returns the length of the resulting physical frame.
	ToPhy(phyFrame []byte) int
}

type Tunnel struct {
	// contains filtered or unexported fields
}

type TunnelOption func(*tunnelOptions) error