1 files changed, 46 insertions, 0 deletions
diff --git a/dhcpv6/option_dhcpv4_o_dhcpv6_server.go b/dhcpv6/option_dhcpv4_o_dhcpv6_server.go
new file mode 100644
index 0000000..a46ecac
--- /dev/null
+++ b/dhcpv6/option_dhcpv4_o_dhcpv6_server.go
@@ -0,0 +1,46 @@
+package dhcpv6
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/u-root/u-root/pkg/uio"
+)
+
+// OptDHCP4oDHCP6Server represents a OptionDHCP4oDHCP6Server option
+//
+// This module defines the OptDHCP4oDHCP6Server structure.
+// https://www.ietf.org/rfc/rfc7341.txt
+type OptDHCP4oDHCP6Server struct {
+	DHCP4oDHCP6Servers []net.IP
+}
+
+// Code returns the option code
+func (op *OptDHCP4oDHCP6Server) Code() OptionCode {
+	return OptionDHCP4oDHCP6Server
+}
+
+// ToBytes returns the option serialized to bytes.
+func (op *OptDHCP4oDHCP6Server) ToBytes() []byte {
+	buf := uio.NewBigEndianBuffer(nil)
+	for _, addr := range op.DHCP4oDHCP6Servers {
+		buf.WriteBytes(addr.To16())
+	}
+	return buf.Data()
+}
+
+func (op *OptDHCP4oDHCP6Server) String() string {
+	return fmt.Sprintf("OptDHCP4oDHCP6Server{4o6-servers=%v}", op.DHCP4oDHCP6Servers)
+}
+
+// ParseOptDHCP4oDHCP6Server builds an OptDHCP4oDHCP6Server structure
+// from a sequence of bytes. The input data does not include option code and length
+// bytes.
+func ParseOptDHCP4oDHCP6Server(data []byte) (*OptDHCP4oDHCP6Server, error) {
+	var opt OptDHCP4oDHCP6Server
+	buf := uio.NewBigEndianBuffer(data)
+	for buf.Has(net.IPv6len) {
+		opt.DHCP4oDHCP6Servers = append(opt.DHCP4oDHCP6Servers, buf.CopyN(net.IPv6len))
+	}
+	return &opt, buf.FinError()
+}