ISIS: T6332: Fix isis not working only ipv6

Author: fett0

data/templates/frr/isisd.frr.j2

@@ -178,7 +178,7 @@ advertise-passive-only
 {%             for priority, priority_limit_options in fast_reroute.lfa.local.priority_limit.items() %}
 {%                 for level in priority_limit_options %}
  fast-reroute priority-limit {{ priority }} {{ level | replace('_', '-') }}
-{%                 endfor %}                   
+{%                 endfor %}
 {%             endfor %}
 {%         endif %}
 {%         if fast_reroute.lfa.local.tiebreaker is vyos_defined %}
@@ -233,6 +233,9 @@ fast-reroute remote-lfa prefix-list {{ prefix_list }}
 {%         endfor %}
 {%     endfor %}
 {% endif %}
+{% if topology is vyos_defined %}
+topology {{ topology }}
+{% endif %}
 {% if level is vyos_defined('level-2') %}
  is-type level-2-only
 {% elif level is vyos_defined %}

interface-definitions/include/isis/protocol-common-config.xml.i

@@ -165,6 +165,41 @@
   </properties>
 </leafNode>
 #include <include/isis/ldp-sync-protocol.xml.i>
+<leafNode name="topology">
+  <properties>
+    <help>Configure IS-IS topologies</help>
+    <completionHelp>
+      <list>ipv4-multicast ipv4-mgmt ipv6-unicast ipv6-multicast ipv6-mgmt ipv6-dstsrc</list>
+    </completionHelp>
+    <valueHelp>
+      <format>ipv4-multicast</format>
+      <description>Use IPv4 multicast topology</description>
+    </valueHelp>
+    <valueHelp>
+      <format>ipv4-mgmt</format>
+      <description>Use IPv4 management topology</description>
+    </valueHelp>
+    <valueHelp>
+      <format>ipv6-unicast</format>
+      <description>Use IPv6 unicast topology</description>
+    </valueHelp>
+    <valueHelp>
+      <format>ipv6-multicast</format>
+      <description>Use IPv6 multicast topology</description>
+    </valueHelp>
+    <valueHelp>
+      <format>ipv6-mgmt</format>
+      <description>Use IPv6 management topology</description>
+    </valueHelp>
+    <valueHelp>
+      <format>ipv6-dstsrc</format>
+      <description>Use IPv6 dst-src topology</description>
+    </valueHelp>
+    <constraint>
+      <regex>(ipv4-multicast|ipv4-mgmt|ipv6-unicast|ipv6-multicast|ipv6-mgmt|ipv6-dstsrc)</regex>
+    </constraint>
+  </properties>
+</leafNode>
 <node name="fast-reroute">
   <properties>
     <help>IS-IS fast reroute configuration</help>

smoketest/scripts/cli/test_protocols_isis.py

@@ -395,5 +395,20 @@ def test_isis_09_lfa(self):
         self.cli_delete(['policy', 'prefix-list', prefix_list])
         self.cli_commit()
 
+    def test_isis_10_topology(self):
+        topologies = ['ipv4-multicast', 'ipv4-mgmt', 'ipv6-unicast', 'ipv6-multicast', 'ipv6-mgmt']
+        interface = 'lo'
+
+        # Set a basic IS-IS config
+        self.cli_set(base_path + ['net', net])
+
+        self.cli_set(base_path + ['interface', interface])
+        for topology in topologies:
+            self.cli_set(base_path + ['topology', topology])
+            self.cli_commit()
+            tmp = self.getFRRconfig(f'router isis {domain}', daemon='isisd')
+            self.assertIn(f' net {net}', tmp)
+            self.assertIn(f' topology {topology}', tmp)
+
 if __name__ == '__main__':
     unittest.main(verbosity=2)