네임서버가 에러난것 같은데 어디를 어떻게 손을 봐야 하는지...
 [root@roo]$ nslookup abc.co.kr
*** Can't find server name for address 210.200.100.100: Non-existent host/domain
Server:  ns2.kornet.net
Address: 168.126.63.2
 Non-authoritative answer:
Name:   abc.co.kr
Address: 210.200.100.100
 지발 알켜주세요 참고문헌이라도....