type VirtualServer struct {
	Address   net.IP
	Protocol  string
	Port      uint16
	Scheduler string
	Flags     ServiceFlags
	Timeout   uint32
}

// ServiceFlags is used to specify session affinity, ip hash etc.
type ServiceFlags uint32

const (
	// FlagPersistent specify IPVS service session affinity
	FlagPersistent = 0x1
	// FlagHashed specify IPVS service hash flag

	}
	// Sub Flags to 0x2
	// 011 -> 001, 010 -> 000
	vs.Flags = ServiceFlags(svc.Flags &^ uint32(FlagHashed))

	if vs.Address == nil {
		if svc.AddressFamily == unix.AF_INET {
			vs.Address = net.IPv4zero
		} else {
			vs.Address = net.IPv6zero
		}
	}
	return vs, nil
}