From 8a11244539ee6f46b72f4b277c65ca6daf949aae Mon Sep 17 00:00:00 2001
From: Jonathan Bennett <jbennett@incomsystems.biz>
Date: Thu, 1 Jan 2026 22:26:59 -0600
Subject: [PATCH] Add PKI_SEND_FAIL_PUBLIC_KEY error code

Add new error code for PKI encryption failure due to missing public key.
---
 meshtastic/mesh.proto | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/meshtastic/mesh.proto b/meshtastic/mesh.proto
index 72989df..8775d6e 100644
--- a/meshtastic/mesh.proto
+++ b/meshtastic/mesh.proto
@@ -1050,6 +1050,12 @@ message Routing {
      * This typically enforced per portnum and is used to prevent a single node from monopolizing airtime
      */
     RATE_LIMIT_EXCEEDED = 38;
+
+    /*
+     * PKI encryption failed, due to no public key for the remote node
+     * This is different from PKI_UNKNOWN_PUBKEY which indicates a failure upon receiving a packet
+     */
+    PKI_SEND_FAIL_PUBLIC_KEY = 39;
   }
 
   oneof variant {