Re-Connection of Internet - Connected but No Access.

real · 2012-08-21 07:26:36

After Starting the system, first- time connection of internet works/access the net-works(updating, browsing, etc.).
but if, internet is disconnected, manually by me or automatically by any reason. Re-connection of internet does'nt work (connected, but no access).
Only reboot & fresh first connection brings the network access again.
I noticed this problem & want to fix it (i am using mobile broadband Usb-modem for internet connection).
please reply (any idea/ own experience).

Trilby · 2012-08-21 11:20:45

You'll have to be much more specific to get help.

What does reconnection doesn't work mean? How do you reconnect - what commands do you use? What does doesn't work mean - what error messages or output do you get?

hussam · 2012-08-21 12:33:23

How are you connecting to the internet?
After you disconnect and reconnect, try the following:
ping google.com
then
ping 173.194.34.78
if the first doesn't work but second does then it could be a DNS issue. check /etc/resolv.conf

real · 2012-08-21 19:16:53

@Trilby @ hussam......
I use wvdial & ppp to connect internet.
Generally, i use the command #pon m (to connect) , #poff m (to disconnect) [' m ' is ppp- ispname].
when i start the system, i do in terminal

[real@real ~]$ su
Password:
[root@real real]# pon m <------------------------------------------------------------------(First time connection).
[root@real real]#

now ,everything access the network , " #pacman -Sy " , chromium , IDM(Wine) , all internet-based programme works.
And " /etc/resolve.conf" is also OK.
See the /etc/resolve.conf

#nano /etc/resolve.conf
GNU nano 2.2.6 File: /etc/resolv.conf

nameserver 208.67.220.220
nameserver 27.251.58.194

Now, i disconnect the internet, i do in terminal

[root@real real]# poff m
[root@real real]#

Now, i reconnect the internet,

[root@real real]# pon m <------------------------------------------------(2nd time connection / Re-connection)
[root@real real]#

this time , 3G usb-modem shows connected , but no internet access..

"ping google.com" doesn't work but "ping 173.194.34.78" works.
this time, " /etc/resolve.conf does'nt shows the above 'nameservers'.

The problem persists with all the connection methods ,wvdial, ppp, network-manager.
So , i think ,it is 'dns'/resolve.conf related problem...please reply ..... how to fix it ?

Last edited by real (2012-08-21 19:25:34)

Trilby · 2012-08-21 19:32:31

Ah, I haven't had to use wvdial or much of this. But I found this which looks like the same issue.

Note the solution(s) proposed there are ubuntu(?) specific. To do the equivalent with arch, you should be able to create a file named /etc/resolve.conf.head in which you include nameserver lines like "nameserver 8.8.8.8" to use googles dns. Or use a suitable alternative to 8.8.8.8.

Edit: Note - again this is a bit of guesswork as I don't use such a setup - but this is where I'd start.

Last edited by Trilby (2012-08-21 19:33:48)

real · 2012-08-22 06:18:55

Trilby wrote:

Ah, I haven't had to use wvdial or much of this. But I found this which looks like the same issue.
Note the solution(s) proposed there are ubuntu(?) specific. To do the equivalent with arch, you should be able to create a file named /etc/resolve.conf.head in which you include nameserver lines like "nameserver 8.8.8.8" to use googles dns. Or use a suitable alternative to 8.8.8.8.
Edit: Note - again this is a bit of guesswork as I don't use such a setup - but this is where I'd start.

Thanx for your link, i have read the ubuntu-specific link.
i think, first solution of the link is not practical, because file-system of Arch & Ubuntu does'nt coincide.
And the 2nd solution of the link is doubtful , because according to solution , the package "resolveconf" is necessary to install.
and the package "resolveconf" is not available in Arch-repository.

So, editing of resolve.conf/dns files without appropriate knowledge, may corrupt the network-settings .
but i will do it with more knowledge of resolve.conf/dns settings.

Last edited by real (2012-08-22 06:21:29)

Strike0 · 2012-08-22 12:51:14

The Arch solution referred to by Trilby is explained here also.

real · 2012-08-23 19:06:35

Strike0 wrote:

The Arch solution referred to by Trilby is explained here also.

thanx for the link....
I did, which is described in the above link,
but it did'nt work in my case.
i think , the description of the above link is for any another settings.

Arch Linux

#1 2012-08-21 07:26:36

Re-Connection of Internet - Connected but No Access.

#2 2012-08-21 11:20:45

Re: Re-Connection of Internet - Connected but No Access.

#3 2012-08-21 12:33:23

Re: Re-Connection of Internet - Connected but No Access.

#4 2012-08-21 19:16:53

Re: Re-Connection of Internet - Connected but No Access.

#5 2012-08-21 19:32:31

Re: Re-Connection of Internet - Connected but No Access.

#6 2012-08-22 06:18:55

Re: Re-Connection of Internet - Connected but No Access.

#7 2012-08-22 12:51:14

Re: Re-Connection of Internet - Connected but No Access.

#8 2012-08-23 19:06:35

Re: Re-Connection of Internet - Connected but No Access.

Board footer