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cgi-bin/p/address.cgi

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+<h3>This camera uses MAC address <b>00:00:23:34:45:66</b> which is a placeholder.</h3>
+<p>You need to replace it with the original MAC address from your stock firmware backup or <a href="#" id="generate-mac-address">generate a random valid MAC address</a>.</p>
+<form action="fw-network.cgi" method="POST" class="row gy-2 gx-3 align-items-center mb-3">
+	<input type="hidden" name="action" value="changemac">
+	<div class="col-auto"><label class="form-label" for="mac_address">New MAC Address</label></div>
+	<div class="col-auto"><input class="form-control" id="mac_address" name="mac_address"type="text"></div>
+	<div class="col-auto"><input class="btn btn-danger" type="submit" value="Change MAC address"></div>
+</form>
+<p class="mb-0">Please note that the new MAC address will most likely give the camera a new IP address assigned by the DHCP server!</p>
+
+<script>
+function generateMacAddress(ev) {
+	ev.preventDefault();
+	const el = document.querySelector('#mac_address');
+	if (el.value == "") {
+		let mac = "";
+		for (let i = 1; i <= 6; i++) {
+			let b = ((Math.random() * 255) >>> 0);
+			if (i === 1) {
+				b = b | 2;
+				b = b & ~1;
+			}
+			mac += b.toString(16).toUpperCase().padStart(2, '0');
+			if (i < 6) {
+				mac += ":";
+			}
+		}
+
+		el.value = mac;
+	} else {
+		alert("There's a value in MAC address field. Please empty the field and try again.");
+	}
+}
+
+window.addEventListener('load', function() {
+	document.querySelector('#generate-mac-address').addEventListener('click', generateMacAddress);
+});
+</script>