Layer 3 IPv6 connection with error

[Xusheng Ai]

Hello,

We are working on an example Jupyter notebook create_l3network_fabnet_ipv6. The example notebook works well. The image type of the node is rocky.
However, when we set the image type to Ubuntu image = 'default_ubuntu_20' node.set_image(image), we got the error from ping experiment:

PING 2602:fcfb:c:1::2(2602:fcfb:c:1::2) 56 data bytes
From 2001:400:7005:7::3 icmp_seq=1 Destination unreachable: Administratively prohibited
From 2001:400:7005:7::3 icmp_seq=2 Destination unreachable: Administratively prohibited
From 2001:400:7005:7::3 icmp_seq=3 Destination unreachable: Administratively prohibited
From 2001:400:7005:7::3 icmp_seq=5 Destination unreachable: Administratively prohibited

--- 2602:fcfb:c:1::2 ping statistics ---
5 packets transmitted, 0 received, +4 errors, 100% packet loss, time 4033ms

Both experiment ran on the same sites: UATH and SALT.
We were wondering if it was the image type causing this problem. And if there was any version of Debian that we could test with.

Thanks,
Best Regards,
Xusheng

• This topic was modified 1 year, 9 months ago by Xusheng Ai.
• This topic was modified 1 year, 9 months ago by Xusheng Ai.
• This topic was modified 1 year, 9 months ago by Xusheng Ai.

[Paul Ruth]

There is a image called “default_ubuntu_22” that you can use.

However, I tried both ubuntu images and there is something about their IPv6 configuration that isn’t working quite right. It looks like in ubuntu the interfaces are not correctly being put in the state ‘up’ with IPv6.

It will work if you add the following line to each of the “Configure NodeX” cells of the JupyterExample:

stdout, stderr = node1.execute(f'sudo ip -6 link set dev {node1_iface.get_os_interface()} up')

 

[Mangesh Atpadikar]

Today I tried the above fix with both ‘default_ubuntu_20’ and ‘default_ubuntu_22’, and with both ‘IPv4’ and ‘IPv6’ examples. But still getting ‘Destination unreachable’ error. Both nodes were in ‘DALL’ site.

Could you please see if anything else is needed ?

For ‘IPv6’ with ‘default_ubuntu_22’ :

PING 2602:fcfb:b:4::2(2602:fcfb:b:4::2) 56 data bytes
From 2001:400:7005:7::3 icmp_seq=1 Destination unreachable: Administratively prohibited
From 2001:400:7005:7::3 icmp_seq=2 Destination unreachable: Administratively prohibited
From 2001:400:7005:7::3 icmp_seq=3 Destination unreachable: Administratively prohibited
From 2001:400:7005:7::3 icmp_seq=4 Destination unreachable: Administratively prohibited
From 2001:400:7005:7::3 icmp_seq=5 Destination unreachable: Administratively prohibited

— 2602:fcfb:b:4::2 ping statistics —
5 packets transmitted, 0 received, +5 errors, 100% packet loss, time 4007ms

• This reply was modified 1 year, 9 months ago by Mangesh Atpadikar. Reason: Added ping logs

[Mangesh Atpadikar]

Nevermind, the fix worked for me. Earlier didn’t put the fix at the right place. It has to be put before ‘node2_iface.ip_addr_add()’.

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