From 6148e6ef60c8d7ba628b42782a7c8772e644a28f Mon Sep 17 00:00:00 2001
From: Shreyas Zare <shreyas@technitium.com>
Date: Sat, 18 Sep 2021 19:23:34 +0530
Subject: [PATCH] DhcpServer: Implemented RemoveLease() method to remove lease
 and update DNS auth zone.

---
 DnsServerCore/Dhcp/DhcpServer.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/DnsServerCore/Dhcp/DhcpServer.cs b/DnsServerCore/Dhcp/DhcpServer.cs
index d1c1d536..9130448a 100644
--- a/DnsServerCore/Dhcp/DhcpServer.cs
+++ b/DnsServerCore/Dhcp/DhcpServer.cs
@@ -1334,6 +1334,16 @@ namespace DnsServerCore.Dhcp
                 SaveScopeFile(scope);
         }
 
+        public void RemoveLease(string scopeName, string hardwareAddress)
+        {
+            Scope scope = GetScope(scopeName);
+            if (scope == null)
+                throw new DhcpServerException("DHCP scope does not exists: " + scopeName);
+
+            Lease removedLease = scope.RemoveLease(hardwareAddress);
+            UpdateDnsAuthZone(false, scope, removedLease);
+        }
+
         public IDictionary<string, string> GetAddressHostNameMap()
         {
             Dictionary<string, string> map = new Dictionary<string, string>();