OpenSUSE Network :: Telnet Does Not Work In IPv6 Test Environment
Aug 27, 2010
In an IPv6 test environment I have installed an openSUSE 11.2 system. I have also installed telnet and it works with IPv4 (I can open a session from a Windows console with "telnet ipv4addr").
If I try to open a session with "telnet ipv6addr" I get the response: "Connecting To ipv6addr. Could not open connection to the host, on port 23: Connect failed".
Does the telnetserver support IPv6 or did I something wrong?
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Jun 8, 2010
Is it possible to setup samba to work over IPv6?
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Jan 5, 2011
I install from openSUSE-11.3-NET-x86_64.iso. Installation was succesfull, but after install all packet on test internet / update was error. And after log in in installed system internet not work. I use router with DHCP
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Jul 21, 2010
Hey even I'm not able to telnet to IPv6 address on port 23
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Feb 7, 2011
I decided to enable dual stack on my home 11.3 machine and play with IPv6. I use ifup to assign static addresses to eth0. FYI here are some things I found:
1. YaST doesn't seem to support associating IPv6 addresses to interfaces, it complains that the address is invalid. However you can edit /etc/sysconfig/network/ifcfg-eth0 manually and specify it like this:
Code:
LABEL_0='V6'
IPADDR_0='FEC::10.1.1.1/64'
SCOPE_0='site'
and when you restart the networking you will see an additional IPv6 address associated with eth0. Fortunately YaST doesn't mangle the entry when you look at it, but you can't edit it.
2. The SCOPE qualifier is documented in /etc/sysconfig/network/ifcfg.template, but seems to have no effect. Site local addresses in IPv6 are supposed to start with FE[CDEF] according to this:
The TCP/IP Guide - IPv6 Special Addresses: Reserved, Private (Link-Local / Site-Local), Unspecified and Loopback
Once bound, you can connect to services using the IPv6 address just like normal. You have to use ping6 instead of ping though.
I added an AAAA record to my nameserver and that seems to work. Whether the client software tries the IPv6 address varies. It depends on whether the software asks for the AAAA record and uses it. It seems my web browsers don't. I'm not surprised, since few people have IPv6 tails from their ISP. I'm going to look and see if there is some browser setting I have to adjust. I also have to figure out a way of making sure that only LAN destinations use IPv6.
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Jul 22, 2010
I seem to having some strange issues with my new sendmail server and was hoping that somebody can offer some assistance with this issue. I recently tried to setup an enviromental monitor that sends alerts via email using a dedicated email account I created on my sendmail server. For whatever reason, it does not seem to be able to send emails, and I have verified the account credentials multiple times.
So I attempted to run a telnet SMTP test to determine what the problem was. I was able to connect and send the emails using this test perfectly fine from my local subnet, however I ran into problems attempting this test from the outside world. When I connect the SMTP PORT 25 from the outside world, I get what seems to be a malformed SMTP greeting.
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Jun 18, 2010
does opensuse 11.2 come with IPv6 enabled by default? where in the gnome gui can i access these settings?
Edit-i went into the gnome network manager applet and i cant find any IPv6 settings for any of my used connections-ethernet, wireless and VPN connections all seem to only IPv4. Can anyone else confirm that opensuse 11.2 uses only IPv4 on its network connections?
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Feb 16, 2011
I am running suse11.3 32 bit, and have installed squid3.
As far as I can tell it's not been compiled with ipv6 support.
Or have I missed some option in some file somewhere?
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Apr 12, 2010
it's a couple of weeks I can't perform YaST updates from my openSUSE 11.2. The reason is that YaST wants to connect to repositories "only" through IPv6, but my network doesn't support it. I quoted only because I suppose it prefers v6 over v4, but it keeps trying to connect without switching to v4 or returning error.
Even if I disabled IPv6 from YaST/Networking/Network Settings, I still have a local scope address. I connect to Wifi using KNetworkManager. The TCP/IP stack should know that if an interface has a local scope v6 address and a global v4 address, it's a bad idea to keep trying with v6. Italian mirror, garr.it, of openSUSE repository both has v4 and v6 addresses. If I try to ping opensuse.mirror.garr.it I ping v4, but if I try to telnet that host on port 80 it tries to connect to v6. Same if I try to connect with Firefox.
How to tell Linux that I don't have IPv6? I'm connecting from University of Naples wireless network. While unina has IPv6 via GARR's Teredo tunnel (2001:760::/32 as I remember), it doesn't reach students' network because DHCP server doesn't release IPv6, nor Zeroconf obtains one. I just would like to use classic IPv4 until, at least for now.
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Aug 10, 2010
I have an issue on a few servers where IPv6 stops working after a reboot. I can ping anything within the same subnet but anything outside of that it gives me host unreachable. I believe that it is not routing for some reason, but I am not sure why. I have tried adding a default Ipv6 route for Eth3 but nothing seems to work.
uname -a
Linux server-1 2.6.27.19-5-default #1 SMP 2009-02-28 04:40:21 +0100 x86_64 x86_64 x86_64 GNU/Linux
Code:
route -A inet6
Kernel IPv6 routing table .....
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Nov 1, 2010
I'm having a little problem here. That, or I'm missing the obvious staring me in the face. I have this file server, called toad. I nuked it's system disk, reorganising the partitions and upgrading to openSUSE 11.3 x64. I installed vsftd with "Yast FTP server", and the config looks OK. I even compared it with that of another machine. But when I try to connect, this is what I get:
user@mainmachine:~> ftp
ftp> open toad
Connected to toad.geuens.org.
500 OOPS: could not bind listening IPv6 socket
I'm prettige sure IPv6 is deactivated. The firewall is disabled on both machines. I've looked this over again and again. Can't find it. It's not the connecting machine, I've tried from another.
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Apr 5, 2011
IPV6 gets more and more interesting. YAST is failing to connect to the repositories. I have disabled ipv6 in several ways but none of them work or YAST (also Konqueror) seems to do it's own thing. I have managed to get Firefox to work see my "slow internet seems to be down to dns post" made earlier today. So as a check on the YAST problem I loaded each of the repository addresses into Firefox and lo they all connect without any problem at all. So it seems that the YAST problem is down to IPV6
In order to disable ipv6 I initially added ipv6.disable=1 to the end of all of the bootloader APPENDS. More recently following up further info on here I added a couple of lines to
/etc/modprobe.d/99-local.conf. These were:
alias net-pf-10 off
alias ipv6 off
This doesn't work either.
Maybe of use to others - It seems it's possible to see if IPV6 is active by typing the following into the command line:
ip a | grep inet6
I'm told if it is active lines will be output? So just what do I do to disable it in YAST and I hope in Konqueror too? It's beginning to look like it is enabled or disabled at the app level according to the Firefox fix.
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Apr 10, 2011
I've had a hell of a time with this and now all but YAST2 are ok. Going back some time to 10.0 this could be used to disable it very completely.
open terminal and run
echo "alias net-pf-10 off" >> /etc/modprobe.conf
echo "alias ipv6 off" >> /etc/modprobe.conf
restart computer. Has anyone used this on more recent issues even 11.4 and are there any repercussions?I assume that the inverse will but it back on ie off's just become on's? I will be using cups when I install my printer which is one concern and I am not at all sure that modprobe will do anything anymore?
I also recollect that there is a command to cause the kernel to effectively reboot which would save restarting. Can't remember what it is. Maybe some one can refresh my memory.
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Nov 30, 2010
i have installed ns 2.33 and added the patch mobiwan for supprting mobile ipv6. i ran some tcl scripts , and below is the trace file generated. calculate the handoff latency, and if someone has awk or perl script to do so, tcl file [URL] out.tr [URL]
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Feb 19, 2010
How do I assign IPv4 and IPv6 static addresses permanently in OpenSUSE 11.2? Currently I am only able to assign either IPv4 or IPv6 static address not both. I cannot find even the interfaces file(/etc/sysconfig/network/interfaces).
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Jan 20, 2011
I can access my NAS box with telnet but the file I am looking for is not in the expected directory. Of course I could go through all the directories using ls -a but that would take days. Is there a command I can run to look for the file for me using the telnet console?
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Jul 8, 2010
On our Home LAN, we have several different SuSE machines running. Now, I have run into a problem which I cannot solve myself. One of the computers (a 11.2) just doesn't receive any IPv6 lease from the main router. The router has radvd running and distributes addresses to the other computers just fine. The network card on the box ist a
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Jul 8, 2011
My ISP offers the service of native IPv6. So my ADSL router provides me with a local and global IPv6 address. However after a reboot it takes minutes to finally see the global address when using "ifconfog eth0". During that time I can't do a ping6 to an external server, which seems logical. So I waited several minutes, but no global address. After that I started a KDE session, went back to the console(<Ctrl>+<Alt>+F1) and now the global address was there. Is this normal behavior or should I file bug report?
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May 7, 2011
I just installed openSUSE 11.4 on my 2 home machines. My home network lies behind a nat router but I still use the external zone setting for my firewalls. In the past to enable network printing between the two computers I opened TCP and UDP port 631. Yast would then see the remote printer, set it up and all was good. This time Yast sees and sets up the remote printer as usual. When I print the test page nothing happens. Checking the cups admin page at localhost:631 on the host machine shows the printer is set up to share but nothing is in the print que. Printing works just fine on the host computer.
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May 31, 2011
I'm looking into creating a virtual machine to mirror a web hosting environment I pay for. Long story short, I need a lab so I am not taking down the live site with my mistakes.Questions:
1 - What OS is most commonly used and / or best for running apache web server?My paid host is running "Operating System =linux; Kernel Version2.6.28.5-grsec-sg2"
2 - What is the best open source solution for creating a virtual linux machine on a box running XP?
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Oct 13, 2010
I need to test a code that needs to have high DiskIO and DiskBisy in a Linux environment. Is there any way that i can use to test this urgent need of mine.
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Apr 13, 2010
I'm using Opera on openSUSE 11.2, and whenever I test java (using this page), it says "Applet crashed." Is there something special I need to do to get java to work properly?
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May 15, 2010
I'm using SLES 10 SP3 with an OpenLDAP directory for user authentication. But every time I try to change the password, SLES tells me that it will be shortened to 8 charactes. I also set the susemaxpasswordlength to 30 within the LDAP. Also changing to MD5 for encryption doesn't fix it.
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Aug 26, 2010
I installed 11.3amd64 as a VM under Vista/VMWare Player - all worked fine. I have now installed it as a physical system. It nstalled cleanly BUT during first boot it could not access the repos. With each repo it gave the message
- download (curl) error for (repo)
- error code connection failed
- error message could not resolve host (repo)
This was followed by a message box containing
- UI syntax error
- no widget with ID 'contents
Firefox could not access the internet (cannot find server) until I disabled IPV6 (I used about:config), now it works fine. I think the repos problem is because of IPV6 - I usually have trouble with IPV6. I tried disabling IPV6 with the following (How To Disable ipv6 on SuSE Linux | Linux Poison)
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Aug 16, 2010
I am running vsftp on one of my systems and when trying to connect to it it errors out with this: vendion@Loki:~> ftp 192.168.1.100 Connected to 192.168.1.100. 500 OOPS: could not bind listening IPv6 socket
I have tried stopping the firewall and even disabling IPv6 nothing changed, any clues as to what is going on?
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Feb 6, 2011
I'm not to sure this is the place I should post this, but couldn't find any place for it to fit. So here is the deal..I am running 10.10 with the standard LAMP setup. I am running a drupal 7 site no problems. What I need to do is run a multi site sub directory. (domain.com/newsite). So far the best I can do is get a directory index of the second site (domain.com/newsite), but cant run the installer. (I did the symbolic link to the doc root of the drupal install.)If I type in the url domain.com/newsite/install.php I get not found. I placed an index.html test page and it renders fine. I think I'm close but just not there yet.
Any ideas from anyone? I can get Sobdomains to work fine on a test mache, but sadly I need the domain/site to work due to lack of DNS support at the moment. I tried to get some info from the drupal forum, but everything always points to subdomin setups. I also posted over there, but it seems like the forums have very little support and are a bit on the slow side.
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Mar 5, 2010
I had just installed linphone in Fedora 10 using # yum install linphone and face the following problem. I installed linphone in 2 clients via LAN and using IPv4 address, I am able to call each other. However when I changed the preference to use IPv6 in the network (the network support IPv6), I am not able to call to each other using IPv6 address.
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Sep 16, 2009
I did a a basic install of postfix and dovecot instead of using courier-pop and courier-imap. This is only send and receiving e-mail locally within the test network 10.7.0.X and 10.0.0.X. I used:
[URL]
my postfix.conf is;
PHP Code:
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This is the error when I send an email from a local machine on the 10.0.0.X network.
PHP Code:
Jan 20 17:05:48 testbox postfix/smtpd[2491]: warning: Illegal address syntax from unknown[10.0.0.111] in MAIL command: <test@10.0.0.112>
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Aug 7, 2010
I just noticed that I find lots of hidden files named ".directory.lock.??????.test" across my samba-shared file system. The questionmarks stand here for some random alpha-numeric patterm.
- Which application might have created them?
- Is it save to delete those ?
With e.g. "find . -type f -name ".directory.lock.??????.test" -exec rm -f {} ;"
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May 20, 2011
When I ping a destination IP address, it responds. However, when I try to telnet or ftp or sftp to the same IP address, it does not connect.
I do not know the physical location of the machine.
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