iptool

type Tool interface {
	// IsPrivate checks whether the given IP address is private, meaning it's
	// using one of the addresses designated by IANA as not routable on the Internet,
	// or the address of one of the interfaces on the current host.
	//
	// Specifically, it considers an IP private if it matches any of these conditions:
	// - Is an IPv4 special use address as defined in https://tools.ietf.org/html/rfc5735#section-3
	// - Is an IPv6 special use address as defined in https://tools.ietf.org/html/rfc5156
	// - Is an address assigned to any of the current machine's network interfaces
	IsPrivate(addr *net.IPAddr) bool
}