static void free_known_addresses(struct addrinfo *ai) {
for(struct addrinfo *aip = ai, *next; aip; aip = next) {
next = aip->ai_next;
static void free_known_addresses(struct addrinfo *ai) {
for(struct addrinfo *aip = ai, *next; aip; aip = next) {
next = aip->ai_next;