Set SO_REUSEADDR for the listening socket. This makes radiusd(8)

can bind both on an interface address and a wildcard address.

diff --git a/usr.sbin/radiusd/radiusd.c b/usr.sbin/radiusd/radiusd.c
index 91f4a11..c40b075 100644 (file)
--- a/usr.sbin/radiusd/radiusd.c
+++ b/usr.sbin/radiusd/radiusd.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: radiusd.c,v 1.40 2024/07/01 03:48:57 yasuoka Exp $    */
+/*     $OpenBSD: radiusd.c,v 1.41 2024/07/01 05:18:16 yasuoka Exp $    */
 
 /*
  * Copyright (c) 2013, 2023 Internet Initiative Japan Inc.
@@ -204,7 +204,7 @@ radiusd_start(struct radiusd *radiusd)
 {
        struct radiusd_listen   *l;
        struct radiusd_module   *module;
-       int                      s;
+       int                      s, on;
        char                     hbuf[NI_MAXHOST];
 
        TAILQ_FOREACH(l, &radiusd->listen, next) {
@@ -220,6 +220,12 @@ radiusd_start(struct radiusd *radiusd)
                            hbuf, (int)htons(l->addr.ipv4.sin_port));
                        goto on_error;
                }
+
+               on = 1;
+               if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on))
+                   == -1)
+                       log_warn("%s: setsockopt(,,SO_REUSEADDR) failed: %m",
+                           __func__);
                if (bind(s, (struct sockaddr *)&l->addr, l->addr.ipv4.sin_len)
                    != 0) {
                        log_warn("Listen %s port %d is failed: bind()",