+
+int config_parse_label(const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+ Network *network = userdata;
+ _cleanup_address_free_ Address *n = NULL;
+ char *label;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = address_new(network, section_line, &n);
+ if (r < 0)
+ return r;
+
+ label = strdup(rvalue);
+ if (!label)
+ return log_oom();
+
+ if (!ascii_is_valid(label) || strlen(label) >= IFNAMSIZ) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Interface label is not ASCII clean or is too"
+ " long, ignoring assignment: %s", rvalue);
+ free(label);
+ return 0;
+ }
+
+ free(n->label);
+ if (*label)
+ n->label = label;
+ else {
+ free(label);
+ n->label = NULL;
+ }
+
+ n = NULL;
+
+ return 0;
+}