samba/./lib/tsocket/tsocket_bsd.c bsds->fde = tevent_add_fd(ev, bsds, bsds->fd, TEVENT_FD_WRITE, tdgram_bsd_fde_handler, bsds); Even google failed to search tevent_add_fv
tevent_add_fv?
Sorry! typo my mistake. Closed!