IPv6 Configuration on SuSE

sunilvadranapu · 03-23-2009, 09:27 AM

Hi all,
I'm using SuSE 10 with IPv4. I want to configure IPv6 on it and test applications with IPv6 support on my box. Could you provide me steps to make IPv6 working on my box.

I found IPv6 is enabled on my box, but how to test whether IPv6 is running or not

Code:

eth0      Link encap:Ethernet  HWaddr 00:13:72:F7:C6:55
          inet addr:153.65.168.65  Bcast:153.65.168.255  Mask:255.255.255.0
          inet6 addr: fe80::213:72ff:fef7:c655/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:648356 errors:0 dropped:0 overruns:0 frame:0
          TX packets:257382 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:104468232 (99.6 Mb)  TX bytes:21940159 (20.9 Mb)
          Base address:0xacc0 Memory:fe0e0000-fe100000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:172 errors:0 dropped:0 overruns:0 frame:0
          TX packets:172 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:11954 (11.6 Kb)  TX bytes:11954 (11.6 Kb)

Thanks for your time.

jschiwal · 03-23-2009, 07:17 PM

This site might help:
http://www.cyberciti.biz/faq/configu...pensuse-linux/

You could set up a second host with ipv6 and use the ping6 program to test connectivity.

Make sure you check whether your firewall handles ipv6 as well. If you enable ipv6 on a host but you don't secure it, you may be leaving it open for other hosts on the LAN. ( Someone mentioned that this often works for local Linux machines on a LAN in a pauldotcom security weekly podcast )

Since my NAT router supports ipv4, I always disable ipv6 on every host. When I got my newest laptop, which came with Vista, I was surprised how poorly wireless was working. It kept loosing the connection and would reconnect. The solution was to disable ipv6 in Vista.
I will log in every month in Vista, for updates, so I'm don't have that much experience using that OS however.

sunilvadranapu · 04-01-2009, 04:42 AM

Hi,
I have installed "t6in4-0.0.0.2-1.noarch.rpm"(IPv6-over-IPv4 tunneling) on my IPv4 box. now i got equivalnet IPv6 for IPv4 address.

Code:

ifconfig t6in4
t6in4     Link encap:IPv6-in-IPv4
          inet6 addr: 2002:9941:a81a::9941:a81a/16 Scope:Global
          inet6 addr: ::153.65.168.26/128 Scope:Compat
          UP RUNNING NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:17 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

Now how to test whether my n/w is supporting IPv6 or not? Shall i now disable IPv4 and work with IPv6?

Thanks in advance.

sunilvadranapu · 04-07-2009, 02:28 AM

With IPv4 tunneling, I'm able to ping to other IPv6(configured with IPv4 tunneling) box and able connect with "ssh -6".

Now I've tow IP addresses one is IPv4 and other IPv6. But if i down IPv4 address, network getting disconnected even though IPv6 is up.

how to configure my box to work with both IPv4 and IPv6? Presently our network running with IPv4. what changes i need to do to run the network with IPv6 also.

Also can any one tell me what is a dual-stack device. In IPv6 addressing book, i've read that IPv4 to IPv6 transition can be done in two ways:
1. IPv4-Compatible IPv6 Addresses
This method is for dual stack devices
2. IPv4-Mapped IPv6 Addresses
This method is for mapping IPv4 devices that are not compatible with IPv6 into the IPv6 address space

My final intention is to support both IPv4 and IPv6 from the same network.
any ideas?

Thanks in advance.