pppoe: merge branch 'bg/pppoe-fix'

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1148

2 files changed, 33 insertions, 8 deletions

diff --git a/src/core/devices/nm-device-ethernet.c b/src/core/devices/nm-device-ethernet.c
index 842d863e8f..4b6adfc13d 100644
--- a/src/core/devices/nm-device-ethernet.c
+++ b/src/core/devices/nm-device-ethernet.c
@@ -1163,11 +1163,10 @@ _ppp_mgr_callback(NMPppMgr *ppp_mgr, const NMPppMgrCallbackData *callback_data,
             gs_free char         *old_name = NULL;
             gs_free_error GError *error    = NULL;
 
-            if (!nm_device_take_over_link(device, callback_data->data.ifindex, &old_name, &error)) {
+            if (!nm_device_set_ip_ifindex(device, callback_data->data.ifindex)) {
                 _LOGW(LOGD_DEVICE | LOGD_PPP,
-                      "could not take control of link %d: %s",
-                      callback_data->data.ifindex,
-                      error->message);
+                      "could not set ip-ifindex %d",
+                      callback_data->data.ifindex);
                 _ppp_mgr_cleanup(self);
                 nm_device_state_changed(device,
                                         NM_DEVICE_STATE_FAILED,
@@ -1892,6 +1891,32 @@ is_available(NMDevice *device, NMDeviceCheckDevAvailableFlags flags)
     return !!nm_device_get_initial_hw_address(device);
 }
 
+static const char *
+get_ip_method_auto(NMDevice *device, int addr_family)
+{
+    NMSettingConnection *s_con;
+
+    s_con = nm_device_get_applied_setting(device, NM_TYPE_SETTING_CONNECTION);
+    g_return_val_if_fail(s_con,
+                         NM_IS_IPv4(addr_family) ? NM_SETTING_IP4_CONFIG_METHOD_AUTO
+                                                 : NM_SETTING_IP6_CONFIG_METHOD_AUTO);
+
+    if (!nm_streq(nm_setting_connection_get_connection_type(s_con),
+                  NM_SETTING_PPPOE_SETTING_NAME)) {
+        return NM_DEVICE_CLASS(nm_device_ethernet_parent_class)
+            ->get_ip_method_auto(device, addr_family);
+    }
+
+    if (NM_IS_IPv4(addr_family)) {
+        /* We cannot do DHCPv4 on a PPP link, instead we get "auto" IP addresses
+         * by pppd. Return "manual" here, which has the suitable effect to a
+         * (zero) manual addresses in addition. */
+        return NM_SETTING_IP6_CONFIG_METHOD_MANUAL;
+    }
+
+    return NM_SETTING_IP6_CONFIG_METHOD_AUTO;
+}
+
 static gboolean
 can_reapply_change(NMDevice   *device,
                    const char *setting_name,
@@ -2047,6 +2072,7 @@ nm_device_ethernet_class_init(NMDeviceEthernetClass *klass)
     device_class->act_stage2_config                              = act_stage2_config;
     device_class->act_stage3_ip_config                           = act_stage3_ip_config;
     device_class->get_configured_mtu                             = get_configured_mtu;
+    device_class->get_ip_method_auto                             = get_ip_method_auto;
     device_class->deactivate                                     = deactivate;
     device_class->get_s390_subchannels                           = get_s390_subchannels;
     device_class->update_connection                              = update_connection;
diff --git a/src/core/devices/nm-device-ppp.c b/src/core/devices/nm-device-ppp.c
index 5ff3240107..61e32348c4 100644
--- a/src/core/devices/nm-device-ppp.c
+++ b/src/core/devices/nm-device-ppp.c
@@ -222,10 +222,9 @@ get_ip_method_auto(NMDevice *device, int addr_family)
         return NM_SETTING_IP6_CONFIG_METHOD_MANUAL;
     }
 
-    /* We can do autoconf6 on an PPP link, but we should already get an IPv6
-     * address from pppd. Use that instead. We however do want to generate our
-     * (own) IPv6 link local address, so return "link-local". */
-    return NM_SETTING_IP6_CONFIG_METHOD_LINK_LOCAL;
+    /* We get a interface identifier via IPV6CP, used to construct a link-local
+     * address. Method auto means autoconf6 as usual.*/
+    return NM_SETTING_IP6_CONFIG_METHOD_AUTO;
 }
 
 static gboolean