Strange problem with DNS?

[brabo]

hm.. weird.. with me, it's just one ip address in the resolv.conf file and it works as well.

but that aside, you do have a valid point about apt. i would further dare to speculate that the problem isn't in your interfaces file either.

what is is eludes me at this time.

i hope someone else passes by who has more insight so you can be helped.

grtz!
brabo.

[Silverboy]

don't worry and thanks a lot for your help!

[superprash2003]

are you sure you are able to ping?? post output of the pings of any external ip..

[Silverboy]

are you sure you are able to ping?? post output of the pings of any external ip..

Yes, I'm sure:

rino@Antares:~$ ping 209.85.171.100
PING 209.85.171.100 (209.85.171.100) 56(84) bytes of data.
64 bytes from 209.85.171.100: icmp_seq=1 ttl=229 time=242 ms
64 bytes from 209.85.171.100: icmp_seq=2 ttl=229 time=265 ms
64 bytes from 209.85.171.100: icmp_seq=3 ttl=229 time=256 ms
64 bytes from 209.85.171.100: icmp_seq=4 ttl=229 time=256 ms
64 bytes from 209.85.171.100: icmp_seq=5 ttl=229 time=251 ms
^C
--- 209.85.171.100 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4003ms
rtt min/avg/max/mdev = 242.821/254.541/265.770/7.522 ms
rino@Antares:~$ ping 208.67.222.222
PING 208.67.222.222 (208.67.222.222) 56(84) bytes of data.
64 bytes from 208.67.222.222: icmp_seq=1 ttl=45 time=100 ms
64 bytes from 208.67.222.222: icmp_seq=2 ttl=45 time=98.3 ms
64 bytes from 208.67.222.222: icmp_seq=3 ttl=45 time=100 ms
64 bytes from 208.67.222.222: icmp_seq=4 ttl=45 time=91.6 ms
64 bytes from 208.67.222.222: icmp_seq=5 ttl=45 time=89.9 ms
^C
--- 208.67.222.222 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4002ms
rtt min/avg/max/mdev = 89.955/96.152/100.639/4.481 ms

Of course, I stopped the pings with CTRL+C. Besides, I can update the package list and install new softare too, but I can't do anything.

rino@Antares:~$ sudo apt-get update
Hit http://it.archive.ubuntu.com jaunty Release.gpg
Get:1 http://security.ubuntu.com jaunty-security Release.gpg [189B]                        
Ign http://security.ubuntu.com jaunty-security/main Translation-it                          
Ign http://security.ubuntu.com jaunty-security/restricted Translation-it                    
Ign http://security.ubuntu.com jaunty-security/universe Translation-it                      
Ign http://security.ubuntu.com jaunty-security/multiverse Translation-it                    
Get:2 http://security.ubuntu.com jaunty-security Release [49,6kB]                           
Hit http://it.archive.ubuntu.com jaunty/main Translation-it                                 
Hit http://it.archive.ubuntu.com jaunty/restricted Translation-it                            
Hit http://it.archive.ubuntu.com jaunty/universe Translation-it                                 
Get:3 http://security.ubuntu.com jaunty-security/main Packages [28,3kB]                         
Hit http://it.archive.ubuntu.com jaunty/multiverse Translation-it                               
Get:4 http://it.archive.ubuntu.com jaunty-updates Release.gpg [189B]                             
Get:5 http://security.ubuntu.com jaunty-security/restricted Packages [14B]                       
Get:6 http://security.ubuntu.com jaunty-security/main Sources [8965B]                                            
Get:7 http://security.ubuntu.com jaunty-security/restricted Sources [14B]                                        
Get:8 http://security.ubuntu.com jaunty-security/universe Packages [9226B]                                       
Get:9 http://security.ubuntu.com jaunty-security/universe Sources [1941B]                                          
Get:10 http://security.ubuntu.com jaunty-security/multiverse Packages [14B]                                          
Get:11 http://security.ubuntu.com jaunty-security/multiverse Sources [14B]                                           
Ign http://it.archive.ubuntu.com jaunty-updates/main Translation-it                                                  
Ign http://it.archive.ubuntu.com jaunty-updates/restricted Translation-it                                            
Ign http://it.archive.ubuntu.com jaunty-updates/universe Translation-it                                              
Ign http://it.archive.ubuntu.com jaunty-updates/multiverse Translation-it                                            
Hit http://it.archive.ubuntu.com jaunty Release                                                                      
Get:12 http://it.archive.ubuntu.com jaunty-updates Release [49,6kB]                                                  
Hit http://it.archive.ubuntu.com jaunty/main Packages                                                                
Hit http://it.archive.ubuntu.com jaunty/restricted Packages                                                          
Hit http://it.archive.ubuntu.com jaunty/main Sources                                                                 
Hit http://it.archive.ubuntu.com jaunty/restricted Sources                                                           
Hit http://it.archive.ubuntu.com jaunty/universe Packages                                                            
Hit http://it.archive.ubuntu.com jaunty/universe Sources                                                             
Hit http://it.archive.ubuntu.com jaunty/multiverse Packages                                                          
Hit http://it.archive.ubuntu.com jaunty/multiverse Sources                                                           
Get:13 http://it.archive.ubuntu.com jaunty-updates/main Packages [69,6kB]                                                                                                           
Get:14 http://it.archive.ubuntu.com jaunty-updates/restricted Packages [14B]                                                                                                        
Get:15 http://it.archive.ubuntu.com jaunty-updates/main Sources [22,7kB]                                                                                                            
Get:16 http://it.archive.ubuntu.com jaunty-updates/restricted Sources [14B]                                                                                                         
Get:17 http://it.archive.ubuntu.com jaunty-updates/universe Packages [19,9kB]                                                                                                       
Get:18 http://it.archive.ubuntu.com jaunty-updates/universe Sources [5564B]                                                                                                         
Get:19 http://it.archive.ubuntu.com jaunty-updates/multiverse Packages [675B]                                                                                                       
Get:20 http://it.archive.ubuntu.com jaunty-updates/multiverse Sources [639B]                                                                                                        
Scaricato 267kB in 7s (37,2kB/s)                                                                                                                                                    
Lettura della lista dei pacchetti in corso... Fatto                                                                                                                                 
rino@Antares:~$ host www.google.com                                                                                                                                                 
;; connection timed out; no servers could be reached

[superprash2003]

post output of sudo iptables -L from the terminal

[Silverboy]

rino@Antares:~$ sudo iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

[superprash2003]

go to system->admin->software sources and under Download from , select Main server , if still doesnt work , select BEST SERVER under OTHER

[Silverboy]

Nothing, I have tried with "MAIN SERVER" and the problem persists. I have tried with "BEST SERVER" too, but KpackageKit seems to crash.

I'm thinking: Could my problem be a bug dued to a bad IPv4 and IPv6 addresses management? I had this idea seeing my ifconfig output, where my eth0 have both inet and inet6 address.

[Silverboy]

Usually, I try to solve problems considering the worst case (this is the explanation of my previous post ).

Trying to reconsidering my problem, I thought that Firefox, Konqueror, Akregator and KPackageKit should have the same way to resolve the urls and, accordingly, my DNS problem is misleading.

So, I have focused on the real differences in these programs and I have concluded that the only difference is that KPackageKit is used with administrator privileges!
Infact, If I type sudo konqueror, I can surf on internet! (I can access to DNS with these applications)

Now, I know I should change some privileges, but such privileges?

[Silverboy]

Typing in a shell

sudo chmod 774 /etc/resolv.conf

I solved my problem.
Thanks to all for the help!