I can't browse to internet as the server do not have gui mode installed .
I can't ping www.yahoo.com
as the firewall is not allowed to ping
for DNS and route -n , I checked that all these settings in all servers is the same , but some server can use apt-get , but some can't , can advise what is the possible reason some server can't use apt-get ,
p.s. they are in same server farm , same segment .