+/** @brief Validate an internet address
+ * @param cs Configuration state
+ * @param nvec Length of (proposed) new value
+ * @param vec Elements of new value
+ * @return 0 on success, non-0 on error
+ *
+ * By a destination address, it is meant that it must be either IPv4 or IPv6.
+ */
+static int validate_inetaddr(const struct config_state *cs,
+ int nvec, char **vec) {
+ struct netaddress na[1];
+
+ if(netaddress_parse(na, nvec, vec)) {
+ disorder_error(0, "%s:%d: invalid network address", cs->path, cs->line);
+ return -1;
+ }
+ switch(na->af) {
+ case AF_INET: case AF_INET6: case AF_UNSPEC: break;
+ default:
+ disorder_error(0, "%s:%d: must be an intenet address",
+ cs->path, cs->line);
+ return -1;
+ }
+ return 0;
+}
+