Fix

Author: SamErde

DDI/Get-DhcpOptionUsed.ps1

@@ -4,7 +4,7 @@
     Check for the usage of specific DHCP option IDs in any context on a DHCP server.
 
     .DESCRIPTION
-    Check for the usage of specific DHCP option IDs in any context on a DHCP server, including DHCP server options, scope options, and reservation options. Check all DHCP options used on a server, including server options, scope options, and reservation options.
+    Check for the usage of specific DHCP option IDs in any context on a DHCP server, including DHCP server options, scope options, and reservation options.
 
     .PARAMETER Server
     The hostname of a DHCP server to inspect.
@@ -23,7 +23,7 @@
         [Parameter(Position = 0)]
         [ValidateNotNullOrEmpty()]
         [string]
-        $Server = 'localhost'
+        $Server = $env:COMPUTERNAME
     )
 
     begin {
@@ -32,9 +32,19 @@
             $Server = $env:COMPUTERNAME
         }
 
+        # Define the options to check
+        $DhcpOptionList = [ordered]@{
+            6  = 'DNS Servers'
+            42 = 'NTP Servers'
+            44 = 'WINS/NBNS Servers'
+        }
+        $OptionsToCheck = $DhcpOptionList.Keys
+    } # end begin block
+
+    process {
         # Check if the $Server is listed in the objects returned by Get-DhcpServerInDC.
         $DhcpServers = Get-DhcpServerInDC
-        if ($DhcpServers.ServerName -notcontains $Server) {
+        if ($DhcpServers.DnsName -notmatch $Server) {
             Write-Warning -Message "The server `'$Server`' is not an authorized DHCP server in the domain."
             return
         }
@@ -47,16 +57,6 @@
             return
         }
 
-        # Define the options to check
-        $DhcpOptionList = [ordered]@{
-            6  = 'DNS Servers'
-            42 = 'NTP Servers'
-            44 = 'WINS/NBNS Servers'
-        }
-        $OptionsToCheck = $DhcpOptionList.Keys
-    } # end begin block
-
-    process {
         # Get all IPv4 DHCP server options and check the options set on each.
         Write-Host 'Checking DHCP Server Options....' -ForegroundColor Green -BackgroundColor Black
         $ServerOptions = Get-DhcpServerv4OptionValue