network/address: make Label= accept an empty string

We usually reset setting when an emptry string is specified.

diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index 09615a4ce49570a13e0d181b5e63205ce7bda077..a7772a589557914e27bd8ed23f0af802fba19ff0 100644 (file)
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -1895,6 +1895,12 @@ int config_parse_label(
                 return 0;
         }
 
+        if (isempty(rvalue)) {
+                n->label = mfree(n->label);
+                TAKE_PTR(n);
+                return 0;
+        }
+
         if (!address_label_valid(rvalue)) {
                 log_syntax(unit, LOG_WARNING, filename, line, 0,
                            "Interface label is too long or invalid, ignoring assignment: %s", rvalue);