From af8f92636875e0fcc2670510ac03133c4793093c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lorenz=20H=C3=B6rburger?=
 <lorenz.hoerburger@bearingpoint.com>
Date: Fri, 20 Mar 2026 13:54:52 +0100
Subject: [PATCH 1/3] feat(communication): add unique ip in subnetwork check

---
 packages/plugins/src/wizards/connectedap.ts | 22 +++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/packages/plugins/src/wizards/connectedap.ts b/packages/plugins/src/wizards/connectedap.ts
index 124e81ed92..4fe78053d6 100644
--- a/packages/plugins/src/wizards/connectedap.ts
+++ b/packages/plugins/src/wizards/connectedap.ts
@@ -329,18 +329,36 @@ export function createTypeRestrictionCheckbox(
   </mwc-formfield>`;
 }
 
+function getIpsInSubnetwork(element: Element): string[] {
+  const subnetwork = element.closest('SubNetwork');
+  if (!subnetwork) return [];
+
+  return Array.from(subnetwork.querySelectorAll('ConnectedAP > Address > P[type="IP"]'))
+    .map(p => p.textContent?.trim() ?? '')
+    .filter(ip => ip !== '');
+}
+
 export function createPTextField(
   element: Element,
   pType: string
 ): TemplateResult {
+    const currentValue =
+      element.querySelector(`:scope > Address > P[type="${pType}"]`)?.innerHTML ??
+      null;
+
+    let reservedIPs: string[] = [];
+    if (pType === 'IP') {
+      reservedIPs = getIpsInSubnetwork(element).filter(ip => ip !== currentValue);
+    }
+
   return oscdHtml`<wizard-textfield
     required
     label="${pType}"
     pattern="${ifDefined(typePattern[pType])}"
     ?nullable=${typeNullable[pType]}
-    .maybeValue=${element.querySelector(`:scope > Address > P[type="${pType}"]`)
-      ?.innerHTML ?? null}
+    .maybeValue=${currentValue}
     maxLength="${ifDefined(typeMaxLength[pType])}"
+    .reservedValues=${reservedIPs}
   ></wizard-textfield>`;
 }
 

From 4a664768d5b205f962915f6692c4c692719fc5ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lorenz=20H=C3=B6rburger?=
 <lorenz.hoerburger@bearingpoint.com>
Date: Mon, 23 Mar 2026 11:27:53 +0100
Subject: [PATCH 2/3] refactor(communication): use textContext and
 :scope-qualified selectors

---
 packages/plugins/src/wizards/connectedap.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/plugins/src/wizards/connectedap.ts b/packages/plugins/src/wizards/connectedap.ts
index 4fe78053d6..57c13c6270 100644
--- a/packages/plugins/src/wizards/connectedap.ts
+++ b/packages/plugins/src/wizards/connectedap.ts
@@ -333,7 +333,7 @@ function getIpsInSubnetwork(element: Element): string[] {
   const subnetwork = element.closest('SubNetwork');
   if (!subnetwork) return [];
 
-  return Array.from(subnetwork.querySelectorAll('ConnectedAP > Address > P[type="IP"]'))
+  return Array.from(subnetwork.querySelectorAll(':scope > ConnectedAP > Address > P[type="IP"]'))
     .map(p => p.textContent?.trim() ?? '')
     .filter(ip => ip !== '');
 }
@@ -343,7 +343,7 @@ export function createPTextField(
   pType: string
 ): TemplateResult {
     const currentValue =
-      element.querySelector(`:scope > Address > P[type="${pType}"]`)?.innerHTML ??
+      element.querySelector(`:scope > Address > P[type="${pType}"]`)?.textContent?.trim() ??
       null;
 
     let reservedIPs: string[] = [];

From 4d23c185059698a54e8e75255f29356d32a16adb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lorenz=20H=C3=B6rburger?=
 <lorenz.hoerburger@bearingpoint.com>
Date: Mon, 23 Mar 2026 11:29:29 +0100
Subject: [PATCH 3/3] refactor(communication): derive SubNetwork via
 parentElement

---
 packages/plugins/src/wizards/connectedap.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/plugins/src/wizards/connectedap.ts b/packages/plugins/src/wizards/connectedap.ts
index 57c13c6270..1ed0494686 100644
--- a/packages/plugins/src/wizards/connectedap.ts
+++ b/packages/plugins/src/wizards/connectedap.ts
@@ -330,7 +330,7 @@ export function createTypeRestrictionCheckbox(
 }
 
 function getIpsInSubnetwork(element: Element): string[] {
-  const subnetwork = element.closest('SubNetwork');
+  const subnetwork = element.parentElement; // SubNetwork is the parent of ConnectedAP
   if (!subnetwork) return [];
 
   return Array.from(subnetwork.querySelectorAll(':scope > ConnectedAP > Address > P[type="IP"]'))