ipList = set.NewStringSet()
	for _, ip := range mustGetLocalIPs() {
		if ip.To4() != nil {
			ipList.Add(ip.String())
		}
	}
	return ipList
}

// mustGetLocalIP6 returns IPv6 addresses of localhost.  It panics on error.
func mustGetLocalIP6() (ipList set.StringSet) {
	ipList = set.NewStringSet()
	for _, ip := range mustGetLocalIPs() {
		if ip.To4() == nil {
			ipList.Add(ip.String())
		}
	}
	return ipList

	}
}

// Returns true if input is IPv6
func isIPv6(host string) bool {
	h, _, err := net.SplitHostPort(host)
	if err != nil {
		h = host
	}
	ip := net.ParseIP(h)
	return ip.To16() != nil && ip.To4() == nil
}

// strip api endpoints list with standard ports such as
// port "80" and "443" before displaying on the startup
// banner.  Returns a new list of API endpoints.

	}

	for _, addr := range addrs {
		var ip net.IP
		switch v := addr.(type) {
		case *net.IPNet:
			ip = v.IP
		case *net.IPAddr:
			ip = v.IP
		}

		if ip.To4() != nil {
			localIP4.Add(ip.String())
		}
	}

	// Filter ipList by IPs those do not start with '127.'.
	nonLoopBackIPs := localIP4.FuncMatch(func(ip string, matchString string) bool {

pkg net, method (IP) IsMulticast() bool
pkg net, method (IP) IsUnspecified() bool
pkg net, method (IP) Mask(IPMask) IP
pkg net, method (IP) String() string
pkg net, method (IP) To16() IP
pkg net, method (IP) To4() IP
pkg net, method (IPMask) Size() (int, int)
pkg net, method (IPMask) String() string
pkg net, method (InvalidAddrError) Error() string
pkg net, method (InvalidAddrError) Temporary() bool