From 0c5a94f1e629bfbbe905d82ab9c4c391d636ce6b Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Tue, 17 Apr 2018 19:49:36 +0200
Subject: persistent macs on yggdrasil

---
 custom/tinc/yggdrasil.nix | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'custom')

diff --git a/custom/tinc/yggdrasil.nix b/custom/tinc/yggdrasil.nix
index 91c1add8..2da48486 100644
--- a/custom/tinc/yggdrasil.nix
+++ b/custom/tinc/yggdrasil.nix
@@ -80,6 +80,13 @@ in {
         ${optionalString cfg.connect "ConnectTo = ymir"}
       '';
       scripts = {
+        "tinc-up" = ''
+          #!${pkgs.stdenv.shell}
+
+          set -e
+          MACFILE="/var/db/$NETNAME.mac"
+          [ -e $MACFILE ] && ip link set dev $INTERFACE address `cat $MACFILE` || cat /sys/class/net/$INTERFACE/address >$MACFILE
+        '';
         "hosts/heimdallr-up" = ''
           #!${pkgs.stdenv.shell}
 
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