From 078827ad3fedb640e45e079a5d34e2771e04a36f Mon Sep 17 00:00:00 2001
From: Yves Rutschle <yves.rutschle@mdal.fr>
Date: Thu, 6 Apr 2017 16:26:27 +0200
Subject: [PATCH] Some systems define IP_FREEBIND but don't implement it which
 result in setsockopt() failing. No need to die in that case, just ignore the
 error.

---
 common.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/common.c b/common.c
index 394cdb1..7799b1e 100644
--- a/common.c
+++ b/common.c
@@ -133,8 +133,12 @@ int start_listen_sockets(int *sockfd[], struct addrinfo *addr_list)
 
        if (IP_FREEBIND) {
            res = setsockopt((*sockfd)[i], IPPROTO_IP, IP_FREEBIND, (char*)&one, sizeof(one));
-           check_res_dumpdie(res, addr, "setsockopt(IP_FREEBIND)");
-       }
+           if (res == -1) {
+               fprintf(stderr, "%s:%s: %s\n",
+                       sprintaddr(buf, sizeof(buf), addr),
+                       syscall,
+                       strerror(errno));
+           }
 
        res = bind((*sockfd)[i], addr->ai_addr, addr->ai_addrlen);
        check_res_dumpdie(res, addr, "bind");