On Fri, 2011-05-27 at 20:28 +0200, Mike Gabriel wrote:

Hi Stephane,

On Fr 27 Mai 2011 16:03:47 CEST Stéphane Graber wrote:

...

stgraber@castiana:~$ host weblive-appserv01.nx.stgraber.org weblive-appserv01.nx.stgraber.org has address 46.4.71.12 weblive-appserv01.nx.stgraber.org has IPv6 address 2001:470:b4c2:1025:1::1

stgraber@castiana:~$ telnet 46.4.71.12 6522 Trying 46.4.71.12... Connected to 46.4.71.12. Escape character is '^]'. SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3 ^] telnet> quit Connection closed.

stgraber@castiana:~$ telnet 2001:470:b4c2:1025:1::1 6522 Trying 2001:470:b4c2:1025:1::1... Connected to 2001:470:b4c2:1025:1::1. Escape character is '^]'. SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3 ^] telnet> quit Connection closed.

stgraber@castiana:~$ telnet weblive-appserv01.nx.stgraber.org 6522 Trying 2001:470:b4c2:1025:1::1... Connected to weblive-appserv01.nx.stgraber.org. Escape character is '^]'. SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3 ^] telnet> quit Connection closed.

Could you try somethin like this...

$ python Python 2.6.6 (r266:84292, Dec 26 2010, 22:31:48) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information.

...

...

...

import socket socket.getaddrinfo('vidar.das-netzwerkteam.de', 32032,
socket.AF_UNSPEC, socket.SOCK_STREAM) [(2, 1, 6, '', ('178.63.100.242', 32032))]

What is the result of socket.getaddrinfo for your server (from your
local host)?

The getaddrinfo tuple represents (family, socktype, proto, canonname,
sockaddr).

This information is queried by paramiko.SSHClient.connect(): http://www.lag.net/paramiko/docs/paramiko.client-pysrc.html

There doesn't seem to be a method to force either of the protocols.

Greets, Mike

PS: could we please these kinds of communication on x2go-dev ML? I
guess our insights should be available for the whole world (mail
archives).

...

...

socket.getaddrinfo("weblive-appserv02.nx.stgraber.org",6522,socket.AF_UNSPEC, socket.SOCK_STREAM) [(10, 1, 6, '', ('2001:470:b4c2:1025:1::2', 6522, 0, 0)), (2, 1, 6, '', ('46.4.71.12', 6522))]

As I mentioned, I have another process using paramiko connecting to the same server and using IPv6.

May 27 14:35:45 weblive-appserv01 sshd[7373]: Accepted password for root from 2001:470:8cc0:1000:223:14ff:fea3:d9a4 port 60372 ssh2 May 27 14:35:45 weblive-appserv01 sshd[7373]: pam_unix(sshd:session): session opened for user root by (uid=0) May 27 14:35:46 weblive-appserv01 sshd[7373]: pam_unix(sshd:session): session closed for user root

Using:

#!/usr/bin/python import paramiko

ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect( "weblive-appserv01.nx.stgraber.org", port=6522, username="root", password="MY PASSWORD", allow_agent=False, look_for_keys=False, timeout=10 ) ssh.close()

-- Stéphane Graber Ubuntu developer http://www.ubuntu.com