+func ParseIP6Prefix(s string) (prefix IP6Prefix, err error) {
+ hasPrefix := strings.Contains(s, "/")
+ if hasPrefix {
+ ip, network, err := net.ParseCIDR(s)
+ if err != nil {
+ return IP6Prefix{}, fmt.Errorf("invalid IP %s: %s", s, err)
+ }
+ maskSize, _ := network.Mask.Size()
+ prefix.Len = byte(maskSize)
+ prefix.Address, err = ParseIP6Address(ip.String())
+ if err != nil {
+ return IP6Prefix{}, fmt.Errorf("invalid IP %s: %s", s, err)
+ }
+ } else {
+ ip := net.ParseIP(s)
+ defaultMaskSize, _ := net.CIDRMask(32, 32).Size()
+ if ip.To4() == nil {
+ defaultMaskSize, _ = net.CIDRMask(128, 128).Size()
+ }
+ prefix.Len = byte(defaultMaskSize)
+ prefix.Address, err = ParseIP6Address(ip.String())
+ if err != nil {
+ return IP6Prefix{}, fmt.Errorf("invalid IP %s: %s", s, err)
+ }
+ }
+ return prefix, nil
+}
+func (x IP6Prefix) ToIPNet() *net.IPNet {
+ mask := net.CIDRMask(int(x.Len), 128)
+ ipnet := &net.IPNet{IP: x.Address.ToIP(), Mask: mask}
+ return ipnet
+}
+func (x IP6Prefix) String() string {
+ ip := x.Address.String()
+ return ip + "/" + strconv.Itoa(int(x.Len))
+}
+func (x *IP6Prefix) MarshalText() ([]byte, error) {
+ return []byte(x.String()), nil
+}
+func (x *IP6Prefix) UnmarshalText(text []byte) error {
+ prefix, err := ParseIP6Prefix(string(text))
+ if err != nil {
+ return err
+ }
+ *x = prefix
+ return nil
+}