ipv6only

2 files changed, 21 insertions, 0 deletions

diff --git a/src/core/ngx_connection.c b/src/core/ngx_connection.c
index 804ab0916..f413ffbe8 100644
--- a/src/core/ngx_connection.c
+++ b/src/core/ngx_connection.c
@@ -282,6 +282,23 @@ ngx_open_listening_sockets(ngx_cycle_t *cycle)
                 return NGX_ERROR;
             }
 
+#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
+
+            if (ls[i].sockaddr->sa_family == AF_INET6 && ls[i].ipv6only) {
+                int  ipv6only;
+
+                ipv6only = (ls[i].ipv6only == 1);
+
+                if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
+                               (const void *) &ipv6only, sizeof(int))
+                    == -1)
+                {
+                    ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
+                                  "setsockopt(IPV6_V6ONLY) %V failed, ignored",
+                                  &ls[i].addr_text);
+                }
+            }
+#endif
             /* TODO: close on exit */
 
             if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
diff --git a/src/core/ngx_connection.h b/src/core/ngx_connection.h
index 171078b23..cc6a92989 100644
--- a/src/core/ngx_connection.h
+++ b/src/core/ngx_connection.h
@@ -56,6 +56,10 @@ struct ngx_listening_s {
     unsigned            shared:1;    /* shared between threads or processes */
     unsigned            addr_ntop:1;
 
+#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
+    unsigned            ipv6only:2;
+#endif
+
 #if (NGX_HAVE_DEFERRED_ACCEPT)
     unsigned            deferred_accept:1;
     unsigned            delete_deferred:1;