poe_tag_copy
extern int poe_tag_copy(poep_t *poep, const uint8_t *tagp);
(void) poe_tag_copy(opoe, tagp);
(void) poe_tag_copy(opoe, tagp);
(void) poe_tag_copy(opoe, tagp);
(void) poe_tag_copy(opoe, tagp);
(void) poe_tag_copy(poep, tagp);
(void) poe_tag_copy(poep, tagp);