From c6a8fa1e6a68e46e89fef0f953f4c7bf4915e257 Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Thu, 1 Aug 2024 17:06:51 +0100
Subject: [PATCH] IPv4LL: If we are not configuring, abort if address does not
 exist

Fixes a segfault as we would not add the address and we would
expect to find it.
---
 src/ipv4ll.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ipv4ll.c b/src/ipv4ll.c
index 43974a80..5b2c48bb 100644
--- a/src/ipv4ll.c
+++ b/src/ipv4ll.c
@@ -400,10 +400,13 @@ ipv4ll_start(void *arg)
 #ifdef IN_IFF_DUPLICATED
 		loginfox("%s: using IPv4LL address %s", ifp->name, ia->saddr);
 #endif
-	} else {
+	} else if (ifp->options->options & DHCPCD_CONFIGURE) {
 		loginfox("%s: probing for an IPv4LL address", ifp->name);
 		if (repick || state->pickedaddr.s_addr == INADDR_ANY)
 			ipv4ll_pickaddr(ifp);
+	} else {
+		logwarnx("%s: refusing to configure IPv4LL", ifp->name);
+		return;
 	}
 
 	ipv4ll_start_arp(ifp);