From 8216ec3027d01b790e59a266227d378ba77a623e Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@jmq.cz>
Date: Wed, 8 Sep 2021 15:30:09 +0000
Subject: [PATCH] There may be a symbol with NULL protocol when reconfiguring

---
 nest/proto.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/nest/proto.c b/nest/proto.c
index 31ee1fa1..7cfb1555 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -2243,8 +2243,13 @@ proto_apply_cmd_symbol(const struct symbol *s, void (* cmd)(struct proto *, uint
     return;
   }
 
-  cmd(s->proto->proto, arg, 0);
-  cli_msg(0, "");
+  if (s->proto->proto)
+  {
+    cmd(s->proto->proto, arg, 0);
+    cli_msg(0, "");
+  }
+  else
+    cli_msg(9002, "%s does not exist", s->name);
 }
 
 static void