[NetworkManager-fortisslvpn] service: fix peer DNS handling

[Beniamino Galvani <bgalvani src gnome org>]

commit 66d431f18fd4812ed984790c877d965b35b69612
Author: Tomas Kovar <tomas kovar sk>
Date:   Sat Apr 4 22:16:01 2020 +0200

    service: fix peer DNS handling
    
    https://gitlab.gnome.org/GNOME/NetworkManager-fortisslvpn/-/issues/20
    https://gitlab.gnome.org/GNOME/NetworkManager-fortisslvpn/-/merge_requests/15

 src/nm-fortisslvpn-service.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/nm-fortisslvpn-service.c b/src/nm-fortisslvpn-service.c
index c2105af..9af823d 100644
--- a/src/nm-fortisslvpn-service.c
+++ b/src/nm-fortisslvpn-service.c
@@ -210,6 +210,7 @@ run_openfortivpn (NMFortisslvpnPlugin *plugin, NMSettingVpn *s_vpn, GError **err
        GPtrArray *argv;
        const char *value;
        gs_free char *str_tmp = NULL;
+       NMSettingIPConfig *ip4_config;
 
        openfortivpn = nm_find_openfortivpn ();
        if (!openfortivpn) {
@@ -229,6 +230,10 @@ run_openfortivpn (NMFortisslvpnPlugin *plugin, NMSettingVpn *s_vpn, GError **err
 
        g_ptr_array_add (argv, (gpointer) g_strdup ("--no-routes"));
        g_ptr_array_add (argv, (gpointer) g_strdup ("--no-dns"));
+       ip4_config = nm_connection_get_setting_ip4_config (priv->connection);
+       if (!nm_setting_ip_config_get_ignore_auto_dns (ip4_config)) {
+               g_ptr_array_add (argv, (gpointer) g_strdup ("--pppd-use-peerdns=1"));
+       }
 
        value = nm_setting_vpn_get_data_item (s_vpn, NM_FORTISSLVPN_KEY_GATEWAY);
        g_ptr_array_add (argv, (gpointer) g_strdup (value));