bgp: T591: add VPN nexthop support per address-family

set protocols bgp address-family ipv4-unicast nexthop vpn export <ipv4-address|ipv6-address>
set protocols bgp address-family ipv6-unicast nexthop vpn export <ipv4-address|ipv6-address>

(cherry picked from commit 7349927908206fa83a7295d643f56950309efb4f)

4 files changed, 43 insertions, 0 deletions

diff --git a/data/templates/frr/bgpd.frr.j2 b/data/templates/frr/bgpd.frr.j2
index f3ae56903..e02fdd1bb 100644
--- a/data/templates/frr/bgpd.frr.j2
+++ b/data/templates/frr/bgpd.frr.j2
@@ -402,6 +402,9 @@ router bgp {{ system_as }} {{ 'vrf ' ~ vrf if vrf is vyos_defined }}
 {%         if afi_config.flooding.head_end_replication is vyos_defined %}
   flooding head-end-replication
 {%         endif %}
+{%         if afi_config.nexthop.vpn.export is vyos_defined %}
+  nexthop vpn export {{ afi_config.nexthop.vpn.export }}
+{%         endif %}
 {%         if afi_config.rd.vpn.export is vyos_defined %}
   rd vpn export {{ afi_config.rd.vpn.export }}
 {%         endif %}
diff --git a/interface-definitions/include/bgp/afi-nexthop-vpn-export.xml.i b/interface-definitions/include/bgp/afi-nexthop-vpn-export.xml.i
new file mode 100644
index 000000000..d90597f37
--- /dev/null
+++ b/interface-definitions/include/bgp/afi-nexthop-vpn-export.xml.i
@@ -0,0 +1,32 @@
+<!-- include start from bgp/afi-nexthop-vpn-export.xml.i -->
+<node name="nexthop">
+  <properties>
+    <help>Specify next hop to use for VRF advertised prefixes</help>
+  </properties>
+  <children>
+    <node name="vpn">
+      <properties>
+        <help>Between current address-family and vpn</help>
+      </properties>
+      <children>
+        <leafNode name="export">
+          <properties>
+            <help>For routes leaked from current address-family to vpn</help>
+            <valueHelp>
+                <format>ipv4</format>
+                <description>BGP neighbor IP address</description>
+              </valueHelp>
+              <valueHelp>
+                <format>ipv6</format>
+                <description>BGP neighbor IPv6 address</description>
+              </valueHelp>
+              <constraint>
+                <validator name="ip-address"/>
+              </constraint>
+          </properties>
+        </leafNode>
+      </children>
+    </node>
+  </children>
+</node>
+  <!-- include end -->
diff --git a/interface-definitions/include/bgp/protocol-common-config.xml.i b/interface-definitions/include/bgp/protocol-common-config.xml.i
index 51daf4e8b..9895b025c 100644
--- a/interface-definitions/include/bgp/protocol-common-config.xml.i
+++ b/interface-definitions/include/bgp/protocol-common-config.xml.i
@@ -120,6 +120,7 @@
         #include <include/bgp/afi-rd.xml.i>
         #include <include/bgp/afi-route-map-vpn.xml.i>
         #include <include/bgp/afi-route-target-vpn.xml.i>
+        #include <include/bgp/afi-nexthop-vpn-export.xml.i>
         <node name="redistribute">
           <properties>
             <help>Redistribute routes from other protocols into BGP</help>
@@ -496,6 +497,7 @@
         #include <include/bgp/afi-rd.xml.i>
         #include <include/bgp/afi-route-map-vpn.xml.i>
         #include <include/bgp/afi-route-target-vpn.xml.i>
+        #include <include/bgp/afi-nexthop-vpn-export.xml.i>
         <node name="redistribute">
           <properties>
             <help>Redistribute routes from other protocols into BGP</help>
diff --git a/smoketest/scripts/cli/test_protocols_bgp.py b/smoketest/scripts/cli/test_protocols_bgp.py
index 0e9ac4f2d..2dbc30a41 100755
--- a/smoketest/scripts/cli/test_protocols_bgp.py
+++ b/smoketest/scripts/cli/test_protocols_bgp.py
@@ -1139,6 +1139,8 @@ class TestProtocolsBGP(VyOSUnitTestSHIM.TestCase):
     def test_bgp_24_srv6_sid(self):
         locator_name = 'VyOS_foo'
         sid = 'auto'
+        nexthop_ipv4 = '192.0.0.1'
+        nexthop_ipv6 = '2001:db8:100:200::2'
 
         self.cli_set(base_path + ['srv6', 'locator', locator_name])
         self.cli_set(base_path + ['sid', 'vpn', 'per-vrf', 'export', sid])
@@ -1158,7 +1160,9 @@ class TestProtocolsBGP(VyOSUnitTestSHIM.TestCase):
         # Now test AFI SID
         self.cli_delete(base_path + ['sid'])
         self.cli_set(base_path + ['address-family', 'ipv4-unicast', 'sid', 'vpn', 'export', sid])
+        self.cli_set(base_path + ['address-family', 'ipv4-unicast', 'nexthop', 'vpn', 'export', nexthop_ipv4])
         self.cli_set(base_path + ['address-family', 'ipv6-unicast', 'sid', 'vpn', 'export', sid])
+        self.cli_set(base_path + ['address-family', 'ipv6-unicast', 'nexthop', 'vpn', 'export', nexthop_ipv6])
 
         self.cli_commit()
 
@@ -1169,8 +1173,10 @@ class TestProtocolsBGP(VyOSUnitTestSHIM.TestCase):
 
         afiv4_config = self.getFRRconfig(' address-family ipv4 unicast')
         self.assertIn(f' sid vpn export {sid}', afiv4_config)
+        self.assertIn(f' nexthop vpn export {nexthop_ipv4}', afiv4_config)
         afiv6_config = self.getFRRconfig(' address-family ipv6 unicast')
         self.assertIn(f' sid vpn export {sid}', afiv6_config)
+        self.assertIn(f' nexthop vpn export {nexthop_ipv6}', afiv4_config)
 
     def test_bgp_25_ipv4_ipv6_labeled_unicast_peer_group(self):
         pg_ipv4 = 'foo4'