From 59e47e9b9a12d692ecf31d2a68407b42ae78dfcd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fl=C3=A1vio=20J=2E=20Saraiva?= <flaviojs2005@gmail.com>
Date: Fri, 15 Mar 2024 16:06:19 +0000
Subject: [PATCH] Clarify why IPV6_V6ONLY is being unset.

Try to silence the coverity defect with a (void) cast.
---
 common/net.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/net.c b/common/net.c
index 470499ce7..1761bdee9 100644
--- a/common/net.c
+++ b/common/net.c
@@ -547,7 +547,10 @@ static int ip_socket_bind(struct addrinfo *addr)
       return(-1);
       
 #ifdef IPV6_V6ONLY
-   setsockopt(fd,IPPROTO_IPV6,IPV6_V6ONLY,&off,sizeof(off));
+   if (addr->ai_family == AF_INET6) {
+      // if supported, allow packets to/from IPv4-mapped IPv6 addresses
+      (void)setsockopt(fd,IPPROTO_IPV6,IPV6_V6ONLY,&off,sizeof(off));
+   }
 #endif
 
    if ( (bind(fd,addr->ai_addr,addr->ai_addrlen) < 0) ||