Patch to netbox to enable entry of IP addresses without prefixlen

netbox-ip-address-no-prefix.diff

diff --git a/netbox/ipam/formfields.py b/netbox/ipam/formfields.py
index 914310b..4810375 100644
--- a/netbox/ipam/formfields.py
+++ b/netbox/ipam/formfields.py
@@ -21,8 +21,8 @@ class IPFormField(forms.Field):
             return value

         # Ensure that a subnet mask has been specified. This prevents IPs from defaulting to a /32 or /128.
-        if len(value.split('/')) != 2:
-            raise ValidationError('CIDR mask (e.g. /24) is required.')
+        #if len(value.split('/')) != 2:
+        #    raise ValidationError('CIDR mask (e.g. /24) is required.')

         try:
             return IPNetwork(value)
diff --git a/netbox/ipam/models.py b/netbox/ipam/models.py
index d37fdec..8f6b44c 100644
--- a/netbox/ipam/models.py
+++ b/netbox/ipam/models.py
@@ -419,6 +419,8 @@ class IPAddress(CreatedUpdatedModel, CustomFieldModel):
         verbose_name_plural = 'IP addresses'

     def __str__(self):
+        if self.address and self.address.size == 1:
+            return str(self.address.ip)
         return str(self.address)

     def get_absolute_url(self):
diff --git a/netbox/ipam/tables.py b/netbox/ipam/tables.py
index 6c99f7d..f3caa02 100644
--- a/netbox/ipam/tables.py
+++ b/netbox/ipam/tables.py
@@ -68,7 +68,11 @@ PREFIX_ROLE_LINK = """

 IPADDRESS_LINK = """
 {% if record.pk %}
+    {% if record.address and record.address.size == 1 %}
+    <a href="{{ record.get_absolute_url }}">{{ record.address.ip }}</a>
+    {% else %}
     <a href="{{ record.get_absolute_url }}">{{ record.address }}</a>
+    {% endif %}
 {% elif perms.ipam.add_ipaddress %}
     <a href="{% url 'ipam:ipaddress_add' %}?address={{ record.1 }}{% if prefix.vrf %}&vrf={{ prefix.vrf.pk }}{% endif %}" class="btn btn-xs btn-success">{% if record.0 <= 65536 %}{{ record.0 }}{% else %}Lots of{% endif %} free IP{{ record.0|pluralize }}</a>
 {% else %}