[PATCH] gateway: fix calculation of is_vpn6

Fix is_vpn6 to use ipv6 variables not ipv4 variables. This stops
the WireGuard plugin from faulting on startup.

Fixes: commit 823d5a2a8cc4 ("connection: Refactor ‘__connman_connection_gateway_add’”)”

Signed-of-by: Gabriel Sanches <[email protected]>
Tested-by: Christian Hewitt <[email protected]>

---
 src/gateway.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/gateway.c b/src/gateway.c
index 16c87f83..b2c211e2 100644
--- a/src/gateway.c
+++ b/src/gateway.c
@@ -3704,10 +3704,10 @@ int __connman_gateway_add(struct connman_service *service,
                                         is_gateway_config_vpn(
                                                 new_gateway->ipv4_config);
 
-               is_vpn6 = do_ipv4 &&
-                                       new_gateway->ipv4_config &&
+               is_vpn6 = do_ipv6 &&
+                                       new_gateway->ipv6_config &&
                                         is_gateway_config_vpn(
-                                               new_gateway->ipv4_config);
+                                               new_gateway->ipv6_config);
 
         } else {
                 if (do_ipv4 && new_gateway->ipv4_config)
-- 
2.43.0