[Bug 463015] New: Able to ping unable to connect
https://bugzilla.novell.com/show_bug.cgi?id=463015 Summary: Able to ping unable to connect Product: openSUSE 11.1 Version: Final Platform: x86-64 OS/Version: openSUSE 11.1 Status: NEW Severity: Major Priority: P5 - None Component: Network AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: chusty@attglobal.net QAContact: qa@suse.de Found By: Community User Problem: ISP dns server is not read. This is what I did: 1. I can ping 2. I can resolve domain names using <host> 3. I can not use firefox, neither update. 4. If I disable within yast ipb6 suddenly I can use firefox and get updates. However I can not get or send mail with evolution. I can however with kmail. 5. /etc/resolv.conf has only one line: nameserver 192.168.0.1 which is the ip of the router. 6. If I add the another line with the ISP DNS server now everything is ok even after enabling ipv6. S nameserver 205.171.3.25 nameserver 192.168.0.1 This is a major problem that did not happens in any of the previous versions since I use suse (9.0) I have always use the 64 b version. I am running kde 4.1.3. -=terry=- -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User chusty@attglobal.net added comment
https://bugzilla.novell.com/show_bug.cgi?id=463015#c1
--- Comment #1 from Teruel de Campo MD
Routers are not DNS serves and sometimes are not good and providing the isp dns server.
Is is probably missing or flaky IPv6 suport.
Under opensuse 11 the only address under /etc/resolv.conf was the router address. From here the OS was able to read the isp dns address and use the ips dns server and I did not have any problems. Under opensuse 11.1 that approach is partially or randomly insufficient. Sometimes it works sometimes it does not. This makes the search for the problem hard. Adding the isp dns addess to the resolv.conf fixed the problem.
In summary in my case these are the steps I went through:
1. Unable to connect to the net and unable to get to the repositories however:
1.1 I was able to ping
1. 2 I was able to resolve domain names:
$ host www.google.com www.google.com is an alias for www.l.google.com. www.l.google.com has address 74.125.95.103 www.l.google.com has address 74.125.95.99 www.l.google.com has address 74.125.95.104 www.l.google.com has address 74.125.95.147
'ping' and 'host' should be one of few programs that are not using Avahi [1]
1.3 I could not access a web site using Firefox. I could not access the repositories
Which is using Avahi [1]
2. The initial solution I found was to disable ipv6 within firefox. That did it. Firefox suddenly worked!.
It seems something wrong with IPv6 in Avahi, as I was able to see DNS queries without answer. Maybe it doesn't remember that "DNS server" has no clue about IPv6, or it is not designed to do so. Hmm ... it can't remember, mdns nor mdns4 are not present in current /etc/nsswitch.conf hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4_minimal is for local host mdns4 is for the rest of the world and it comes at the end of the line, after dns, but I don't know why it is dropped out.
3. I still could not see any of the community repositories under yast or update anything. So I enable ipv6 inside Firefox and disable ipv6 under yast (network services). Now I could use firefox and see all the repositories and update the system. 3.1 But I still could not fetch or send mail using evolution. I was able to fetch mail using kmail but kmail could not send mail. How can figure out this behavior?
My KMail has no problems in any direction. My problem was with browsing.
4. I start to think more and more of a DNS problem so I look into the web router utility and from there I got the ISP DNS address and I added to the resolv.conf nameserver:xxx.xxx.xxx.xxx. Then enable ipv6 as it was as default and reboot. Suddenly everything works perfect.
5. I remove the DNS from the resolv.conf and I added it using yast networking so now is added automatically to the resolv.conf. I have not had any problems since.
What has change since opensuse 11.0 I donot know but I have both installed and what I described is the difference.
The /etc/nsswitch.conf is not. They are identical. I can put DNS servers in /etc/resolv.conf just as a patch that may speed up resolution, as it skips router, but it is not permanent solution. [1] http://avahi.org/wiki/AboutAvahi -- Regards, Rajko -- -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User chusty@attglobal.net added comment
https://bugzilla.novell.com/show_bug.cgi?id=463015#c2
--- Comment #2 from Teruel de Campo MD
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User chusty@attglobal.net added comment
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--- Comment #3 from Teruel de Campo MD
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User medwinz@gmail.com added comment
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M. Edwin Zakaria
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User aorlovskyy@novell.com added comment
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Alexander Orlovskyy
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User chusty@attglobal.net added comment
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--- Comment #6 from Teruel de Campo MD
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User aorlovskyy@novell.com added comment
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Alexander Orlovskyy
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User chusty@attglobal.net added comment
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--- Comment #8 from Teruel de Campo MD
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User chusty@attglobal.net added comment
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--- Comment #9 from Teruel de Campo MD
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User jpr@novell.com added comment
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JP Rosevear
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