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Index: server/libvncserver/sockets.c
diff -u -p server/libvncserver/sockets.c.orig server/libvncserver/sockets.c
--- server/libvncserver/sockets.c.orig Tue Jan 2 22:34:50 2007
+++ server/libvncserver/sockets.c Sun Mar 25 22:52:02 2007
@@ -560,6 +560,7 @@ ListenOnTCPPort(port, localOnly)
#ifdef ENABLE_IPV6
struct sockaddr_in6 addr_in6;
+ int off = 0;
memset(&addr_in6, 0, sizeof(addr_in6));
addr_in6.sin6_family = AF_INET6;
@@ -570,6 +571,9 @@ ListenOnTCPPort(port, localOnly)
addrlen = sizeof(addr_in6);
sock = socket(AF_INET6, SOCK_STREAM, 0);
+#ifdef IPV6_V6ONLY
+ setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&off, sizeof(off));
+#endif
#endif
if (sock < 0) {
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