LDP_AF_INET
t->a_af = htons(LDP_AF_INET);
(ntohs(a->af) != LDP_AF_INET))
ntohs(a->af) != LDP_AF_INET)
al_tlv.a_af = htons(LDP_AF_INET);
if (ntohs(pref->af) == LDP_AF_INET) {
if (ntohs(pref->af) == LDP_AF_INET) {
p->af = htons(LDP_AF_INET);
p->af = htons(LDP_AF_INET);
if (ntohs(pref->af) == LDP_AF_INET) {