From aa4a5f681ae39637d2a76ade6ea4b339a4963c0e Mon Sep 17 00:00:00 2001
From: Lars Wendler <polynomial-c@gentoo.org>
Date: Tue, 18 Sep 2018 15:05:36 +0200
Subject: [PATCH] Fix build with --disable-ipv6
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Otheriwse build breaks with:

fping.c:690:24: error: ‘socket6’ undeclared (first use in this function);
did you mean ‘socket4’?
---
 src/fping.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/fping.c b/src/fping.c
index 35edca43..414da2fd 100644
--- a/src/fping.c
+++ b/src/fping.c
@@ -687,7 +687,11 @@ int main(int argc, char** argv)
 
     /* validate various option settings */
 
-    if (socket4 < 0 && socket6 < 0) {
+    if (socket4 < 0
+#ifdef IPV6
+	&& socket6 < 0
+#endif
+    ) {
         crash_and_burn("can't create socket (must run as root?)");
     }