DHCP Operation / 새 IP 재할당

* DHCP Operation (DORA)

C --------------------------------> S DHCP Discover C <-------------------------------- S DHCP Offer C --------------------------------> S DHCP Request C <-------------------------------- S DHCP Ack

Broadcast Unicast Broadcast Unicast

* Cleint 에서 IP 해제
cmd> ipconfig /release

* Client 에서 새로운 IP 다시 받아오기
cmd> ipconfig /renew