fix: IP-Bereiche mit korrekten Adresstypen erstellen

- Start- und Endadressen als netaddr-Objekte übergeben
- Fehler einzelner IP-Adressen beim Abgleich protokollieren
- IP-Netzübersicht direkt im IPAM-Menü registrieren
- Plugin-Version auf 1.2.1 erhöhen

netbox_better_ips/services.py

@@ -1,6 +1,7 @@
 import ipaddress
 import logging
 
+import netaddr
 from django.db import transaction
 from ipam.models import IPRange
 from netbox.plugins import get_plugin_config
@@ -46,8 +47,10 @@ def ensure_range_for_ip(ip, *, config=None):
     elif network.version == 6 and network.prefixlen < 127:
         first += 1
 
-    start_address = f"{ipaddress.ip_address(first)}/{network.prefixlen}"
-    end_address = f"{ipaddress.ip_address(last)}/{network.prefixlen}"
+    # IPRange.save() performs arithmetic on the field values before Django's
+    # field conversion runs, so these must be netaddr objects rather than strings.
+    start_address = netaddr.IPNetwork(f"{ipaddress.ip_address(first)}/{network.prefixlen}")
+    end_address = netaddr.IPNetwork(f"{ipaddress.ip_address(last)}/{network.prefixlen}")
     lookup = {
         "start_address": start_address,
         "end_address": end_address,