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#!rsc
# RouterOS script: update-gre-address
# Copyright (c) 2013-2018 Christian Hesse <mail@eworm.de>
#
# update gre interface remote address with dynamic address from
# ipsec remote peer
/ interface gre set remote-address=0.0.0.0 disabled=yes [ find where !running !disabled ];
:foreach peer in=[ / ip ipsec remote-peers find ] do={
:local id [ / ip ipsec remote-peers get $peer id ];
:local greint [ / interface gre find where comment=$id ];
:if ([ :len $greint ] > 0) do={
:local grename [ / interface gre get $greint name ];
:local addrold [ / interface gre get $greint remote-address ];
:local disabled [ / interface gre get $greint disabled ];
:local addrnew [ / ip ipsec remote-peers get $peer dynamic-address ];
:if ($addrnew != $addrold || $disabled = true) do={
:log info ("Update remote address for interface " . $grename . " to " . $addrnew);
/ interface gre set remote-address=0.0.0.0 disabled=yes [ find where remote-address=$addrnew name!=$grename ];
/ interface gre set $greint remote-address=$addrnew disabled=no;
}
}
}
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