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-rw-r--r--update-gre-address.rsc32
1 files changed, 32 insertions, 0 deletions
diff --git a/update-gre-address.rsc b/update-gre-address.rsc
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+#!rsc by RouterOS
+# RouterOS script: update-gre-address
+# Copyright (c) 2013-2023 Christian Hesse <mail@eworm.de>
+# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
+#
+# update gre interface remote address with dynamic address from
+# ipsec remote peer
+# https://git.eworm.de/cgit/routeros-scripts/about/doc/update-gre-address.md
+
+:local 0 "update-gre-address";
+:global GlobalFunctionsReady;
+:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
+
+:global CharacterReplace;
+:global LogPrintExit2;
+
+/interface/gre/set remote-address=0.0.0.0 disabled=yes [ find where !running !disabled ];
+
+:foreach Peer in=[ /ip/ipsec/active-peers/find ] do={
+ :local PeerVal [ /ip/ipsec/active-peers/get $Peer ];
+ :local GreInt [ /interface/gre/find where comment=($PeerVal->"id") or comment=[ $CharacterReplace ($PeerVal->"id") "CN=" "" ] ];
+ :if ([ :len $GreInt ] > 0) do={
+ :local GreIntVal [ /interface/gre/get $GreInt ];
+ :if ([ :typeof ($PeerVal->"dynamic-address") ] = "str" && \
+ ($PeerVal->"dynamic-address" != $GreIntVal->"remote-address" || \
+ $GreIntVal->"disabled" = true)) do={
+ $LogPrintExit2 info $0 ("Updating remote address for interface " . $GreIntVal->"name" . " to " . $PeerVal->"dynamic-address") false;
+ /interface/gre/set remote-address=0.0.0.0 disabled=yes [ find where remote-address=$PeerVal->"dynamic-address" name!=$GreIntVal->"name" ];
+ /interface/gre/set $GreInt remote-address=($PeerVal->"dynamic-address") disabled=no;
+ }
+ }
+}