go-gateway/gateway_darwin.go

//go:build darwin
// +build darwin

package gateway

import (
	"net"
)

func discoverGatewayOSSpecificIPv4() (ip net.IP, err error) {
	ipstr := execCmd("sh", "-c", "route -n get default | grep 'gateway' | awk 'NR==1{print $2}'")
	ipv4 := net.ParseIP(ipstr)
	if ipv4 == nil {
		return nil, errCantParse
	}
	return ipv4, nil
}

func discoverGatewayOSSpecificIPv6() (ip net.IP, err error) {
	ipstr := execCmd("sh", "-c", "route -6 -n get default | grep 'gateway' | awk 'NR==1{print $2}'")
	ipv6 := net.ParseIP(ipstr)
	if ipv6 == nil {
		return nil, errCantParse
	}
	return ipv6, nil
}