diff --git a/webui/src/app/host-form/host-form.component.ts b/webui/src/app/host-form/host-form.component.ts
index 5854f4b17..9907d6810 100644
--- a/webui/src/app/host-form/host-form.component.ts
+++ b/webui/src/app/host-form/host-form.component.ts
@@ -570,16 +570,19 @@ export class HostFormComponent implements OnInit, OnDestroy {
             }
         }
         if (host.prefixReservations?.length > 0) {
+            let addressReservationCount = host.addressReservations?.length ?? 0
             for (let i = 0; i < host.prefixReservations.length; i++) {
-                if (this.ipGroups.length <= i) {
+                let ipGroupsIndex = i + addressReservationCount
+                if (this.ipGroups.length <= ipGroupsIndex) {
                     this.addIPInput()
                 }
                 let pdSplit = host.prefixReservations[i].address.split('/', 2)
                 if (pdSplit.length == 2) {
                     let pdLen = parseInt(pdSplit[1], 10)
                     if (!isNaN(pdLen) && pdLen <= 128) {
-                        this.ipGroups.at(i).get('inputPDLen').setValue(pdLen)
-                        this.ipGroups.at(i).get('inputPD').setValue(pdSplit[0])
+                        this.ipGroups.at(ipGroupsIndex).get('ipType').setValue('ia_pd')
+                        this.ipGroups.at(ipGroupsIndex).get('inputPDLength').setValue(pdLen)
+                        this.ipGroups.at(ipGroupsIndex).get('inputPD').setValue(pdSplit[0])
                     }
                 }
             }