diff --git a/DnsServerCore/Dhcp/DhcpOption.cs b/DnsServerCore/Dhcp/DhcpOption.cs
index 8792de38..37c5c017 100644
--- a/DnsServerCore/Dhcp/DhcpOption.cs
+++ b/DnsServerCore/Dhcp/DhcpOption.cs
@@ -1,6 +1,6 @@
 /*
 Technitium DNS Server
-Copyright (C) 2022  Shreyas Zare (shreyas@technitium.com)
+Copyright (C) 2023  Shreyas Zare (shreyas@technitium.com)
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -19,8 +19,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 using DnsServerCore.Dhcp.Options;
 using System;
-using System.Globalization;
 using System.IO;
+using TechnitiumLibrary;
 using TechnitiumLibrary.IO;
 
 namespace DnsServerCore.Dhcp
@@ -129,7 +129,7 @@ namespace DnsServerCore.Dhcp
             _code = code;
 
             if (hexValue.Contains(':'))
-                _value = ParseColonHexString(hexValue);
+                _value = hexValue.ParseColonHexString();
             else
                 _value = Convert.FromHexString(hexValue);
         }
@@ -260,38 +260,6 @@ namespace DnsServerCore.Dhcp
             }
         }
 
-        protected static byte[] ParseColonHexString(string value)
-        {
-            int i;
-            int j = -1;
-            string strHex;
-            int b;
-
-            using (MemoryStream mS = new MemoryStream())
-            {
-                while (true)
-                {
-                    i = value.IndexOf(':', j + 1);
-                    if (i < 0)
-                        i = value.Length;
-
-                    strHex = value.Substring(j + 1, i - j - 1);
-
-                    if (!int.TryParse(strHex, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out b) || (b < byte.MinValue) || (b > byte.MaxValue))
-                        throw new InvalidDataException("VendorSpecificInformation option data must be a colon (:) separated hex string.");
-
-                    mS.WriteByte((byte)b);
-
-                    if (i == value.Length)
-                        break;
-
-                    j = i;
-                }
-
-                return mS.ToArray();
-            }
-        }
-
         #endregion
 
         #region internal