From: Mark Andrews <marka@isc.org>
Date: Mon, 19 Nov 2018 01:27:56 +0000 (+1100)
Subject: handle systems without IPv4
X-Git-Tag: v9.13.5~35^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=509dad8737fb9f5c9b045c00c1864a1d3e59953c;p=thirdparty%2Fbind9.git

handle systems without IPv4
---

diff --git a/lib/isc/unix/socket.c b/lib/isc/unix/socket.c
index 7e1c616afdb..2a5648c126b 100644
--- a/lib/isc/unix/socket.c
+++ b/lib/isc/unix/socket.c
@@ -5453,9 +5453,13 @@ init_hasreuseport() {
 	int sock, yes = 1;
 	sock = socket(AF_INET, SOCK_DGRAM, 0);
 	if (sock < 0) {
-		return;
-	} else if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
-			      (void *)&yes, sizeof(yes)) < 0)
+		sock = socket(AF_INET6, SOCK_DGRAM, 0);
+		if (sock < 0) {
+			return;
+		}
+	}
+	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
+		       (void *)&yes, sizeof(yes)) < 0)
 	{
 		close(sock);
 		return;