Example #1
1
// sets IP4 addr on link removing any existing ones first
func setAddr4(link *netlink.Vxlan, ipn *net.IPNet) error {
	addrs, err := netlink.AddrList(link, syscall.AF_INET)
	if err != nil {
		return err
	}

	addr := netlink.Addr{ipn, ""}
	existing := false
	for _, old := range addrs {
		if old.IPNet.String() == addr.IPNet.String() {
			existing = true
			continue
		}
		if err = netlink.AddrDel(link, &old); err != nil {
			return fmt.Errorf("failed to delete IPv4 addr %s from %s", old.String(), link.Attrs().Name)
		}
	}

	if !existing {
		if err = netlink.AddrAdd(link, &addr); err != nil {
			return fmt.Errorf("failed to add IP address %s to %s: %s", ipn.String(), link.Attrs().Name, err)
		}
	}

	return nil
}
Example #2
0
// sets IP4 addr on link removing any existing ones first
func setAddr4(link *netlink.Vxlan, ipn *net.IPNet) error {
	addrs, err := netlink.AddrList(link, syscall.AF_INET)
	if err != nil {
		return err
	}

	for _, addr := range addrs {
		if err = netlink.AddrDel(link, &addr); err != nil {
			return fmt.Errorf("failed to delete IPv4 addr %s from %s", addr.String(), link.Attrs().Name)
		}
	}

	addr := netlink.Addr{IPNet: ipn, Label: ""}
	if err = netlink.AddrAdd(link, &addr); err != nil {
		return fmt.Errorf("failed to add IP address %s to %s: %s", ipn.String(), link.Attrs().Name, err)
	}

	return nil
}