Preparando para desempaquetar .../tftpd-hpa_5.2+20140608-3ubuntu1_amd64.deb ...
Desempaquetando tftpd-hpa (5.2+20140608-3ubuntu1) ...
Procesando disparadores para man-db (2.7.0.2-5) ...
Procesando disparadores para systemd (219-7ubuntu5) ...
Procesando disparadores para ureadahead (0.100.0-19) ...
ureadahead will be reprofiled on next reboot
Configurando tftpd-hpa (5.2+20140608-3ubuntu1) ...
tftpd user (tftp) already exists, doing nothing.

tftpd-hpa directory (/var/lib/tftpboot) already exists, doing nothing.
Job for tftpd-hpa.service failed. See "systemctl status tftpd-hpa.service" and "journalctl -xe" for details.
invoke-rc.d: initscript tftpd-hpa, action "start" failed.
dpkg: error al procesar el paquete tftpd-hpa (--configure):
 el subproceso instalado el script post-installation devolvió el código de salida de error 1