+static void serialize_addresses(FILE *f, const char *key, Address *address) {
+ Address *ad;
+
+ assert(f);
+ assert(key);
+
+ if (!address)
+ return;
+
+ fprintf(f, "%s=", key);
+
+ LIST_FOREACH(addresses, ad, address) {
+ char buf[INET6_ADDRSTRLEN];
+
+ if (inet_ntop(ad->family, &ad->in_addr, buf, INET6_ADDRSTRLEN))
+ fprintf(f, "%s%s", buf, (ad->addresses_next) ? " ": "");
+ }
+
+ fputs("\n", f);
+}
+
+static void link_update_operstate(Link *link) {
+
+ assert(link);
+
+ if (link->kernel_operstate == IF_OPER_DORMANT)
+ link->operstate = LINK_OPERSTATE_DORMANT;
+ else if (link_has_carrier(link->flags, link->kernel_operstate)) {
+ Address *address;
+ uint8_t scope = RT_SCOPE_NOWHERE;
+
+ /* if we have carrier, check what addresses we have */
+ LIST_FOREACH(addresses, address, link->addresses) {
+ if (address->scope < scope)
+ scope = address->scope;
+ }
+
+ if (scope < RT_SCOPE_SITE)
+ /* universally accessible addresses found */
+ link->operstate = LINK_OPERSTATE_ROUTABLE;
+ else if (scope < RT_SCOPE_HOST)
+ /* only link or site local addresses found */
+ link->operstate = LINK_OPERSTATE_DEGRADED;
+ else
+ /* no useful addresses found */
+ link->operstate = LINK_OPERSTATE_CARRIER;
+ } else
+ link->operstate = LINK_OPERSTATE_UNKNOWN;
+}
+