From 1da1701ce75d0685a0587ce6f0365a0be447c662 Mon Sep 17 00:00:00 2001
From: Viacheslav <v.gletenko@vyos.io>
Date: Tue, 28 Dec 2021 15:42:48 +0000
Subject: listen-address: T4110: Ability to set IPv6 link-local addresses Some
 services allows to set link-local IPv6 addresses as listen-address. Allow it
 and add a validator 'ipv6-link-local' and extend listen-address.xml.i to this
 validator

---
 interface-definitions/include/listen-address.xml.i |  1 +
 src/validators/ipv6-link-local                     | 12 ++++++++++++
 2 files changed, 13 insertions(+)
 create mode 100755 src/validators/ipv6-link-local

diff --git a/interface-definitions/include/listen-address.xml.i b/interface-definitions/include/listen-address.xml.i
index 9b86851c7..f6ee676f4 100644
--- a/interface-definitions/include/listen-address.xml.i
+++ b/interface-definitions/include/listen-address.xml.i
@@ -17,6 +17,7 @@
     <constraint>
       <validator name="ipv4-address"/>
       <validator name="ipv6-address"/>
+      <validator name="ipv6-link-local"/>
     </constraint>
   </properties>
 </leafNode>
diff --git a/src/validators/ipv6-link-local b/src/validators/ipv6-link-local
new file mode 100755
index 000000000..05e693b77
--- /dev/null
+++ b/src/validators/ipv6-link-local
@@ -0,0 +1,12 @@
+#!/usr/bin/python3
+
+import sys
+from vyos.validate import is_ipv6_link_local
+
+if __name__ == '__main__':
+    if len(sys.argv)>1:
+        addr = sys.argv[1]
+        if not is_ipv6_link_local(addr):
+            sys.exit(1)
+
+    sys.exit(0)
-- 
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