arch-gnu-linux: explicitly disable loopback

commit 2ce296a5 removed this stanza, but it looks like we actually need to force IP_MULTICAST_LOOP to zero.

arch-gnu-linux: explicitly disable loopback
commit 2ce296a5 removed this stanza, but it looks like we actually need to force IP_MULTICAST_LOOP to zero.
655bd587 · Alessandro Rubini · 78efba06 · 655bd587
Commit 655bd587 authored Mar 02, 2013 by Alessandro Rubini
Hide whitespace changes
Inline Side-by-side

Showing with 8 additions and 0 deletions

posix-socket.c arch-gnu-linux/posix-socket.c +8 -0

No files found.
--- a/arch-gnu-linux/posix-socket.c
+++ b/arch-gnu-linux/posix-socket.c
@@ -320,6 +320,14 @@ static int posix_open_ch(struct pp_instance *ppi, char *ifname, int chtype)
 		return -1;
 	}

+	/* forcibly disable loopback */
+	temp = 0;
+	if (setsockopt(sock, IPPROTO_IP, IP_MULTICAST_LOOP,
+		       &temp, sizeof(int)) < 0) {
+		pp_diag_error_str2(ppi, "IP_MULTICAST_LOOP", strerror(errno));
+		return -1;
+	}
+
 	/* make timestamps available through recvmsg() */
 	if (setsockopt(sock, SOL_SOCKET, SO_TIMESTAMP,
 		       &temp, sizeof(int)) < 0) {