From 31f76f607158997ab3967d0ee61404b263e754b3 Mon Sep 17 00:00:00 2001
From: Dirk Meyer <dirk.meyer+git@dinoex.sub.org>
Date: Thu, 20 Aug 2020 08:13:42 +0200
Subject: [PATCH] - fix regression introduced in fping 4.3 bind to source only
 when option was set. this allows to work in jails and lxc with custom IPs.
 this allows IPv4 only and IPv6 only hosts

---
 src/fping.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/fping.c b/src/fping.c
index 0bc2d81..aa87c2d 100644
--- a/src/fping.c
+++ b/src/fping.c
@@ -1060,11 +1060,11 @@ int main(int argc, char** argv)
         exit(num_noaddress ? 2 : 1);
     }
 
-    if (socket4 >= 0) {
+    if (src_addr_set && socket4 >= 0) {
         socket_set_src_addr_ipv4(socket4, &src_addr, (socktype4 == SOCK_DGRAM) ? &ident4 : NULL);
     }
 #ifdef IPV6
-    if (socket6 >= 0) {
+    if (src_addr6_set && socket6 >= 0) {
         socket_set_src_addr_ipv6(socket6, &src_addr6, (socktype6 == SOCK_DGRAM) ? &ident6 : NULL);
     }
 #endif