From 7549c847c3df9155c4315efcccfaf798af9fb402 Mon Sep 17 00:00:00 2001
From: Paul Lettington <paul@plett.co.uk>
Date: Wed, 9 Mar 2022 14:24:16 +0000
Subject: policy: T2493 ip-next-hop unchanged & peer-address

Also add ipv6-next-hop peer-address
---
 data/templates/frr/policy.frr.tmpl  |  3 +++
 interface-definitions/policy.xml.in | 16 ++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/data/templates/frr/policy.frr.tmpl b/data/templates/frr/policy.frr.tmpl
index d3d3957a5..97eb15331 100644
--- a/data/templates/frr/policy.frr.tmpl
+++ b/data/templates/frr/policy.frr.tmpl
@@ -276,6 +276,9 @@ route-map {{ route_map }} {{ rule_config.action }} {{ rule }}
 {%           if rule_config.set.ipv6_next_hop is defined and rule_config.set.ipv6_next_hop.local is defined and rule_config.set.ipv6_next_hop.local is not none %}
  set ipv6 next-hop local {{ rule_config.set.ipv6_next_hop.local }}
 {%           endif %}
+{%           if rule_config.set.ipv6_next_hop is defined and rule_config.set.ipv6_next_hop.peer_address is defined %}
+ set ipv6 next-hop peer-address
+{%           endif %}
 {%           if rule_config.set.ipv6_next_hop is defined and rule_config.set.ipv6_next_hop.prefer_global is defined %}
  set ipv6 next-hop prefer-global
 {%           endif %}
diff --git a/interface-definitions/policy.xml.in b/interface-definitions/policy.xml.in
index 9767285dd..5e037b558 100644
--- a/interface-definitions/policy.xml.in
+++ b/interface-definitions/policy.xml.in
@@ -1115,13 +1115,23 @@
                       <help>Nexthop IP address</help>
                       <completionHelp>
                         <script>${vyos_completion_dir}/list_local_ips.sh --ipv4</script>
+                        <list>unchanged peer-address</list>
                       </completionHelp>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>IP address</description>
                       </valueHelp>
+                      <valueHelp>
+                        <format>unchanged</format>
+                        <description>Set the BGP nexthop address as unchanged</description>
+                      </valueHelp>
+                      <valueHelp>
+                        <format>peer-address</format>
+                        <description>Set the BGP nexthop address to the address of the peer</description>
+                      </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
+                        <regex>^(unchanged|peer-address)$</regex>
                       </constraint>
                     </properties>
                   </leafNode>
@@ -1160,6 +1170,12 @@
                           </constraint>
                         </properties>
                       </leafNode>
+                      <leafNode name="peer-address">
+                        <properties>
+                          <help>Use peer address (for BGP only)</help>
+                          <valueless/>
+                        </properties>
+                      </leafNode>
                       <leafNode name="prefer-global">
                         <properties>
                           <help>Prefer global address as the nexthop</help>
-- 
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