dns_name_countlabels
(int)dns_name_countlabels(name) > ndots))
labels = dns_name_countlabels(name);
n = dns_name_countlabels(name);
count = dns_name_countlabels(prefix);
node->labels = (uint8_t)dns_name_countlabels(&tname);
dns_name_countlabels(const dns_name_t *name);
if (dns_name_countlabels(owner_name) == 0)
l1 = dns_name_countlabels(name);
l2 = dns_name_countlabels(origin);