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#!rsc
# RouterOS script: update-gre-address
# Copyright (c) 2013-2019 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 active-peers find ] do={
:local Id [ / ip ipsec active-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 active-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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