From 12af69b443b24b54461c52cb8e3f69d83dcc6639 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Wed, 10 Jul 2019 11:22:25 +0200
Subject: [PATCH] update-gre-address: handle missing dynamic address

---
 update-gre-address | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/update-gre-address b/update-gre-address
index 5842669..3050d8b 100644
--- a/update-gre-address
+++ b/update-gre-address
@@ -12,8 +12,10 @@
   :local GreInt [ / interface gre find where comment=$PeerVal->"id" ];
   :if ([ :len $GreInt ] > 0) do={
     :local GreIntVal [ / interface gre get $GreInt ];
-    :if ($PeerVal->"dynamic-address" != $GreIntVal->"remote-address" || $GreIntVal->"disabled" = true) do={
-      :log info ("Update remote address for interface " . $GreIntVal->"name" . " to " . $PeerVal->"dynamic-address");
+    :if ([ :typeof ($PeerVal->"dynamic-address") ] = "str" && \
+         ($PeerVal->"dynamic-address" != $GreIntVal->"remote-address" || \
+          $GreIntVal->"disabled" = true)) do={
+      :log info ("Updating remote address for interface " . $GreIntVal->"name" . " to " . $PeerVal->"dynamic-address");
       / interface gre set remote-address=0.0.0.0 disabled=yes [ find where remote-address=$PeerVal->"dynamic-address" name!=$GreIntVal->"name" ];
       / interface gre set $GreInt remote-address=($PeerVal->"dynamic-address") disabled=no;
     }