Golang AddDefaultGw Examples

Example #1

File: init.go Project: snormore/flynn

func setupNetworking(args *ContainerInitArgs) error {
	// loopback
	iface, err := net.InterfaceByName("lo")
	if err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}
	if err := netlink.NetworkLinkUp(iface); err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}
	if args.ip != "" {
		if iface, err = net.InterfaceByName("eth0"); err != nil {
			return fmt.Errorf("Unable to set up networking: %v", err)
		}
		ip, ipNet, err := net.ParseCIDR(args.ip)
		if err != nil {
			return fmt.Errorf("Unable to set up networking: %v", err)
		}
		if err := netlink.NetworkLinkAddIp(iface, ip, ipNet); err != nil {
			return fmt.Errorf("Unable to set up networking: %v", err)
		}
		if args.gateway != "" {
			if err := netlink.AddDefaultGw(args.gateway, "eth0"); err != nil {
				return fmt.Errorf("Unable to set up networking: %v", err)
			}
		}
		if err := netlink.NetworkLinkUp(iface); err != nil {
			return fmt.Errorf("Unable to set up networking: %v", err)
		}
	}

	return nil
}

Example #2

File: init.go Project: devick/flynn

func setupNetworking(c *Config) error {
	if c.IP == "" {
		return nil
	}

	// loopback
	iface, err := net.InterfaceByName("lo")
	if err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}
	if err := netlink.NetworkLinkUp(iface); err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}
	if iface, err = net.InterfaceByName("eth0"); err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}
	ip, ipNet, err := net.ParseCIDR(c.IP)
	if err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}
	if err := netlink.NetworkLinkAddIp(iface, ip, ipNet); err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}
	if c.Gateway != "" {
		if err := netlink.AddDefaultGw(c.Gateway, "eth0"); err != nil {
			return fmt.Errorf("Unable to set up networking: %v", err)
		}
	}
	if err := netlink.NetworkLinkUp(iface); err != nil {
		return fmt.Errorf("Unable to set up networking: %v", err)
	}

	return nil
}