Update get_ipv4 and get_ipv6 for multiple nics + Reformatted code

opennebula_api/serializers.py

@@ -1,5 +1,6 @@
 import ipaddress
 
+from builtins import hasattr
 from rest_framework import serializers
 
 from oca import OpenNebulaException
@@ -115,15 +116,30 @@ class VirtualMachineSerializer(serializers.Serializer):
         return template.name.strip('public-')
 
     def get_ipv4(self, obj):
-        nic = obj.template.nics[0]
-        if 'vm-ipv6-nat64-ipv4' in nic.network and is_in_v4_range(nic.mac):
-            return str(v4_from_mac(nic.mac))
+        """
+        Get the IPv4s from the given VM
+
+        :param obj: The VM in contention
+        :return: Returns csv string of all IPv4s added to this VM otherwise returns "-" if no IPv4 is available
+        """
+        ipv4 = []
+        for nic in obj.template.nics:
+            if hasattr(nic, 'ip'):
+                ipv4.append(nic.ip)
+        if len(ipv4) > 0:
+            return ', '.join(ipv4)
         else:
             return '-'
 
     def get_ipv6(self, obj):
-        nic = obj.template.nics[0]
-        return nic.ip6_global
+        ipv6 = []
+        for nic in obj.template.nics:
+            if hasattr(nic, 'ip6_global'):
+                ipv6.append(nic.ip6_global)
+        if len(ipv6) > 0:
+            return ', '.join(ipv6)
+        else:
+            return '-'
 
     def get_name(self, obj):
         return obj.name.strip('public-')