From 29647c828015df5db9a558351fe65b12f1014cee Mon Sep 17 00:00:00 2001
From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Mon, 4 Aug 2014 17:21:26 +0200
Subject: [PATCH] cmdmon: allow binding to address that doesn't exist yet

---
 cmdmon.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cmdmon.c b/cmdmon.c
index bde2a6f..37f0d3d 100644
--- a/cmdmon.c
+++ b/cmdmon.c
@@ -199,6 +199,14 @@ prepare_socket(int family, int port_number)
     LOG(LOGS_ERR, LOGF_CmdMon, "Could not set reuseaddr socket options");
     /* Don't quit - we might survive anyway */
   }
+
+#ifdef IP_FREEBIND
+  /* Allow binding to address that doesn't exist yet */
+  if (setsockopt(sock_fd, IPPROTO_IP, IP_FREEBIND, (char *)&on_off, sizeof(on_off)) < 0) {
+    LOG(LOGS_ERR, LOGF_CmdMon, "Could not set free bind socket option");
+  }
+#endif
+
 #ifdef HAVE_IPV6
   if (family == AF_INET6) {
 #ifdef IPV6_V6ONLY