diff --git a/conf/plugins/socket-default.opt b/conf/plugins/socket-default.opt
index 483a0f03d584..6fc7c2db47a7 100644
--- a/conf/plugins/socket-default.opt
+++ b/conf/plugins/socket-default.opt
@@ -7,5 +7,5 @@ charon.plugins.socket-default.set_source = yes
 charon.plugins.socket-default.use_ipv4 = yes
 	Listen on IPv4, if possible.
 
-charon.plugins.socket-default.use_ipv6 = yes
+charon.plugins.socket-default.use_ipv6 = no
 	Listen on IPv6, if possible.
diff --git a/src/libcharon/plugins/socket_default/socket_default_socket.c b/src/libcharon/plugins/socket_default/socket_default_socket.c
index ba22b0c2bdb6..da6989d81d7a 100644
--- a/src/libcharon/plugins/socket_default/socket_default_socket.c
+++ b/src/libcharon/plugins/socket_default/socket_default_socket.c
@@ -748,7 +748,7 @@ static bool use_family(int family)
 						"%s.plugins.socket-default.use_ipv4", TRUE, lib->ns);
 		case AF_INET6:
 			return lib->settings->get_bool(lib->settings,
-						"%s.plugins.socket-default.use_ipv6", TRUE, lib->ns);
+						"%s.plugins.socket-default.use_ipv6", FALSE, lib->ns);
 		default:
 			return FALSE;
 	}