client_nextaddr
if (p->addr == NULL && client_nextaddr(p) == -1) {
client_nextaddr(p);
client_nextaddr(p);
if (client_nextaddr(p) == 1) {
client_nextaddr(p);
if (client_nextaddr(p) == 1) {
client_nextaddr(p);
int client_nextaddr(struct ntp_peer *);