confile: clear vlan id

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

diff --git a/src/lxc/confile.c b/src/lxc/confile.c
index 0597d8e3b5ac909d4e8dd9c418bbe3c9aa19ca65..6a6f549c9ed39c4a830ad117766616e64e01e741 100644 (file)
--- a/src/lxc/confile.c
+++ b/src/lxc/confile.c
@@ -988,6 +988,11 @@ static int set_config_network_vlan_id(const char *key, const char *value,
                return -1;
        }
 
+       if (lxc_config_value_empty(value)) {
+               netdev->priv.vlan_attr.vid = 0;
+               return 0;
+       }
+
        if (get_u16(&netdev->priv.vlan_attr.vid, value, 0))
                return -1;