commit 9faf45f67970778277c533cc7acbe3c73bfe11c2
Author: Philippe Troin <phil+github-commits@fifi.org>
Date:   Wed Apr 23 16:04:20 2025 -0700

    C23 compatibility.
    
    bool is a keyword in C23.

diff --git a/src/kern.c b/src/kern.c
index 27f8dd4..04f1c36 100644
--- a/src/kern.c
+++ b/src/kern.c
@@ -104,11 +104,11 @@ void k_set_rcvbuf(int bufsize, int minsize)
  * in the kernel and "panic". The kernel patch for netinet/ip_raw.c
  * coming with this distribution fixes it.
  */
-void k_hdr_include(int bool)
+void k_hdr_include(int flag)
 {
 #ifdef IP_HDRINCL
-    if (setsockopt(igmp_socket, IPPROTO_IP, IP_HDRINCL, &bool, sizeof(bool)) < 0)
-        logit(LOG_ERR, errno, "Failed setting socket IP_HDRINCL %u", bool);
+    if (setsockopt(igmp_socket, IPPROTO_IP, IP_HDRINCL, &flag, sizeof(flag)) < 0)
+        logit(LOG_ERR, errno, "Failed setting socket IP_HDRINCL %u", flag);
 #endif
 }