Firmware is the piece of software that acts as an interface between the hardware(motherboard) and the Operating System. Legacy Mode refers to BIOS firmware. Basic Input/Output System(BIOS) was the first popular firmware for desktop PC introduced in 1975 by IBM for its CP/M OS. Even though it is still widely present, computers have evolved tremendously and BIOS is unable to provide advanced features of modern hardware.
wget http://members.home.nl/p.a.rombouts/pdnsd/releases/pdnsd-1.2.9a-par_sl6.x86_64.rpm yum install pdnsd-1.2.9a-par_sl6.x86_64.rpm cp /etc/pdnsd.conf.sample /etc/pdnsd.conf
2. 编辑 /etc/pdnsd.conf，粘帖以下内容：