network manager restart 후.......인터넷의 끊기는군요..?

등짝을보자의 이미지

이게 도대체 무슨 원인인지 모르겠는데요..

/etc/rc.d/init.d/NetworkManager restart

이렇게 한후에 일정시간이 지나면 인터넷이 저절로 끊깁니다..

/etc/rc.d/init.d/network start

하면 다시 되구요..
또 일정시간 지나면 또 끊기구요..

/etc/resolv.conf

; generated by NetworkManager, do not edit!
 
; Use a local caching nameserver controlled by NetworkManager
 
 
 
nameserver 127.0.0.1

이런말 나오던데..
여기서 nameserver 을 제가 변경하면 될거같았지만 안되더군요..
networkManager 로 설정하는 방법이 있는건가요??

cat /var/log/message

Nov 14 19:32:46 snakengn NetworkManager: DHCP: Got some data of length 78.
Nov 14 19:32:46 snakengn NetworkManager: DHCP: Reply message's source port (137) was not the DHCP server port number (67), won't use it.
Nov 14 19:32:46 snakengn NetworkManager: DHCP: Reply message's source port (137) was not the DHCP server port number (67), won't use it.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Got some data of length 78.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Reply message's source port (137) was not the DHCP server port number (67), won't use it.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Request sent, waiting for reply...
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Got some data of length 78.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Reply message's source port (137) was not the DHCP server port number (67), won't use it.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Request sent, waiting for reply...
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Got some data of length 78.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Reply message's source port (137) was not the DHCP server port number (67), won't use it.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Got some data of length 78.
Nov 14 19:32:47 snakengn NetworkManager: DHCP: Reply message's source port (137) was not the DHCP server port number (67), won't use it.

이런 메시지도 나오던데 원인이 뭔지 모르겠습니다....