From c5a2ec5b2d0a12f9ddf12345e3a22a16a8358cdb Mon Sep 17 00:00:00 2001
From: puddly <32534428+puddly@users.noreply.github.com>
Date: Mon, 1 Nov 2021 18:19:34 -0400
Subject: [PATCH] Disallow 0x0000 as a PAN ID The probability of it being
 randomly picked is about 0.002%

---
 zigpy_znp/zigbee/application.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zigpy_znp/zigbee/application.py b/zigpy_znp/zigbee/application.py
index 10b3e663..19792a42 100644
--- a/zigpy_znp/zigbee/application.py
+++ b/zigpy_znp/zigbee/application.py
@@ -362,7 +362,7 @@ async def form_network(self):
         network_key = self.config[conf.CONF_NWK][conf.CONF_NWK_KEY]
 
         if pan_id is None:
-            pan_id = random.SystemRandom().randint(0x0000, 0xFFFE + 1)
+            pan_id = random.SystemRandom().randint(0x0001, 0xFFFE + 1)
 
         if extended_pan_id is None:
             extended_pan_id = ExtendedPanId(os.urandom(8))