fw

type Addr struct {
	IP   net.IP
	Mask net.IPMask
}

type Config interface {
	// Link connected to the network with local clients.
	LAN() Link

	// Link connected to a broader network (possibly the internet) that will
	// be used to masquerade outbound connections from LAN().
	Uplink() Link

	// Other networks that can be routed to from LAN without masquerading. The
	// static route will not be established in the reverse direction.
	FlatNetworks() []StaticRoute

	ExtraRules() rules.RuleSet
}

type Link interface {
	Name() string
}

type LinkString string

type StaticRoute struct {
	Link   Link
	Subnet Addr
}