From 1c9b1893c476d1d7b38a018b63734be01a193776 Mon Sep 17 00:00:00 2001
From: Jan-Bulthuis <git@bulthuis.dev>
Date: Sat, 9 Aug 2025 23:10:49 +0200
Subject: [PATCH] feat: Monitoring client

---
 monitor.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100755 monitor.sh

diff --git a/monitor.sh b/monitor.sh
new file mode 100755
index 0000000..9aa4a01
--- /dev/null
+++ b/monitor.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+interface="${MADD_INTERFACE:-"eth0"}"
+client_script="${MADD_CLIENT_SCRIPT:-"./client.sh"}"
+
+ip monitor address label dev "$interface" | while read event; do
+    if [[ $event == \[ADDR\]* ]]; then
+        ipv4=$(ip addr show dev "$interface" | grep -Po 'inet \K[\d.]+')
+        if [ -n "$ipv4" ]; then
+            export MADD_IP="$ipv4"
+            $client_script
+        fi
+    fi
+done
\ No newline at end of file