nce_cmp_ll_addr
if (!nce_cmp_ll_addr(dst_ncec, src_haddr, hlen)) {
(nce_cmp_ll_addr(dst_ncec, dst_haddr, hlen) == 0)) {
ll_changed = nce_cmp_ll_addr(ncec, src_haddr, hlen);
if (!nce_cmp_ll_addr(dst_ncec, haddr, hlen))
ll_changed = nce_cmp_ll_addr(ncec, hw_addr, hw_addr_len);
extern boolean_t nce_cmp_ll_addr(const ncec_t *, const uchar_t *, uint32_t);