sum4
hv = IPE_HASH_FN(sum4((uint32_t *)ipe->ipe_addr.in6_addr8),
sum4((uint32_t *)ipe->ipe_mask.in6_addr8),
hv = IPE_HASH_FN(sum4((uint32_t *)addr), sum4((uint32_t *)msk),
static uint32_t sum4(uint32_t *);