-sudo apt-get install libnet-dhcp-perl libmodule-install-perl libautodie-perl syslinux
-ln -s /usr/lib/syslinux/gpxelinux.0 tftp/
+sudo apt-get install \
+ libnet-dhcp-perl libmodule-install-perl libautodie-perl libmodule-refresh-perl libnet-dns-perl \
+ syslinux