bge_unicst_set
static int bge_unicst_set(void *, const uint8_t *,
if ((err = bge_unicst_set(bgep, mac_addr, slot)) != 0)
(void) bge_unicst_set(bgep, zero_addr, slot);
if ((err = bge_unicst_set(bgep, zero_addr, slot)) != 0)
static int bge_unicst_set(void *, const uint8_t *, int);