[docker-fpm-quagga]: Enable sending ipv6 prefixes over ipv4 BGPMON session. (#3828)

* Enable ipv6 prefixes over ipv4 BGPMON session

* Fix testcases

* Update bgpd_quagga.conf

Author: pavel-shirshov

dockers/docker-fpm-quagga/bgpd.conf.j2

@@ -24,9 +24,9 @@ route-map FROM_BGP_SPEAKER_V4 permit 10
 route-map TO_BGP_SPEAKER_V4 deny 10
 !
 {% if BGP_MONITORS is defined and BGP_MONITORS|length > 0 %}
-route-map FROM_BGPMON_V4 deny 10
+route-map FROM_BGPMON deny 10
 !
-route-map TO_BGPMON_V4 permit 10
+route-map TO_BGPMON permit 10
 !
 {% endif %}
 router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
@@ -102,22 +102,25 @@ router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
 {% endblock bgp_peers_with_range %}
 {% block bgp_monitors %}
 {% if BGP_MONITORS is defined and BGP_MONITORS|length > 0 %}
-  neighbor BGPMON_V4 peer-group
-  neighbor BGPMON_V4 activate
+  neighbor BGPMON peer-group
+  neighbor BGPMON activate
 {% for (name, prefix) in LOOPBACK_INTERFACE %}
 {% if prefix | ipv4 and name == 'Loopback0' %}
-  neighbor BGPMON_V4 update-source {{ prefix | ip }}
+  neighbor BGPMON update-source {{ prefix | ip }}
 {% endif %}
 {% endfor %}
-  neighbor BGPMON_V4 route-map FROM_BGPMON_V4 in
-  neighbor BGPMON_V4 route-map TO_BGPMON_V4 out
-  neighbor BGPMON_V4 send-community
-  neighbor BGPMON_V4 maximum-prefix 1
+  neighbor BGPMON route-map FROM_BGPMON in
+  neighbor BGPMON route-map TO_BGPMON out
+  neighbor BGPMON send-community
+  neighbor BGPMON maximum-prefix 1
 {% for neighbor_addr, bgp_session in BGP_MONITORS.items() %}
   neighbor {{ neighbor_addr }} remote-as {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
-  neighbor {{ neighbor_addr }} peer-group BGPMON_V4
+  neighbor {{ neighbor_addr }} peer-group BGPMON
   neighbor {{ neighbor_addr }} description {{ bgp_session['name'] }}
   neighbor {{ neighbor_addr }} activate
+  address-family ipv6
+    neighbor {{ neighbor_addr }} activate
+  exit-address-family
 {% endfor %}
 {% endif %}
 {% endblock bgp_monitors %}

src/sonic-config-engine/tests/sample_output/bgpd_quagga.conf

@@ -16,9 +16,9 @@ route-map FROM_BGP_SPEAKER_V4 permit 10
 !
 route-map TO_BGP_SPEAKER_V4 deny 10
 !
-route-map FROM_BGPMON_V4 deny 10
+route-map FROM_BGPMON deny 10
 !
-route-map TO_BGPMON_V4 permit 10
+route-map TO_BGPMON permit 10
 !
 router bgp 65100
   bgp log-neighbor-changes
@@ -32,17 +32,20 @@ router bgp 65100
     network fc00:1::32/64
   exit-address-family
   network 192.168.0.1/27
-  neighbor BGPMON_V4 peer-group
-  neighbor BGPMON_V4 activate
-  neighbor BGPMON_V4 update-source 10.1.0.32
-  neighbor BGPMON_V4 route-map FROM_BGPMON_V4 in
-  neighbor BGPMON_V4 route-map TO_BGPMON_V4 out
-  neighbor BGPMON_V4 send-community
-  neighbor BGPMON_V4 maximum-prefix 1
+  neighbor BGPMON peer-group
+  neighbor BGPMON activate
+  neighbor BGPMON update-source 10.1.0.32
+  neighbor BGPMON route-map FROM_BGPMON in
+  neighbor BGPMON route-map TO_BGPMON out
+  neighbor BGPMON send-community
+  neighbor BGPMON maximum-prefix 1
   neighbor 10.20.30.40 remote-as 65100
-  neighbor 10.20.30.40 peer-group BGPMON_V4
+  neighbor 10.20.30.40 peer-group BGPMON
   neighbor 10.20.30.40 description BGPMonitor
   neighbor 10.20.30.40 activate
+  address-family ipv6
+    neighbor 10.20.30.40 activate
+  exit-address-family
 !
 maximum-paths 64
 !