func ChangeInterfaceName(old, newName string) error {
iface, err := net.InterfaceByName(old)
if err != nil {
return err
}
return netlink.NetworkChangeName(iface, newName)
}
func (v *veth) initialize(config *network) error {
peer := config.TempVethPeerName
if peer == "" {
return fmt.Errorf("peer is not specified")
}
child, err := net.InterfaceByName(peer)
if err != nil {
return err
}
if err := netlink.NetworkLinkDown(child); err != nil {
return err
}
if err := netlink.NetworkChangeName(child, config.Name); err != nil {
return err
}
// get the interface again after we changed the name as the index also changes.
if child, err = net.InterfaceByName(config.Name); err != nil {
return err
}
if config.MacAddress != "" {
if err := netlink.NetworkSetMacAddress(child, config.MacAddress); err != nil {
return err
}
}
ip, ipNet, err := net.ParseCIDR(config.Address)
if err != nil {
return err
}
if err := netlink.NetworkLinkAddIp(child, ip, ipNet); err != nil {
return err
}
if config.IPv6Address != "" {
if ip, ipNet, err = net.ParseCIDR(config.IPv6Address); err != nil {
return err
}
if err := netlink.NetworkLinkAddIp(child, ip, ipNet); err != nil {
return err
}
}
if err := netlink.NetworkSetMTU(child, config.Mtu); err != nil {
return err
}
if err := netlink.NetworkLinkUp(child); err != nil {
return err
}
if config.Gateway != "" {
if err := netlink.AddDefaultGw(config.Gateway, config.Name); err != nil {
return err
}
}
if config.IPv6Gateway != "" {
if err := netlink.AddDefaultGw(config.IPv6Gateway, config.Name); err != nil {
return err
}
}
return nil
}