#1 2018-09-26 18:05:43

Mason
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From: Delaware
Registered: 2018-09-26
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[MrVM] NC Possible IPv6 issues?

Anyone else experiencing issues over IPv6 on the Lenoir, NC MrVM node?

Able to ssh in via the allocated IPv4 port, but nothing over v6. Once in to the VM, there's no IPv6 connectivity out either (Destination unreachable: No route). I've got two VMs with this same issue. Recently reinstalled Deb 9, so not sure if it's just the template or something else going on.

Cheers!
-Mason

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#2 2018-09-26 19:18:33

mikho
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From: Hell and gore == Sweden
Registered: 2013-03-02
Posts: 1,622
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Re: [MrVM] NC Possible IPv6 issues?

I’ll have a check either within the hour or first thing tomorrow.
Haven’t heard from anyone else but there was a mention from the dc that they was changinga router or something.

I need to find that info email and check connectivity.
Not the first time a router change causes ipv6 issues. (Last time was not Lenoir).

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#3 2018-09-27 06:38:54

mikho
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Re: [MrVM] NC Possible IPv6 issues?

could you try now?

It works from my test server

--> adding .-.. forgot to press submit yesterday.. dammit

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#4 2018-09-27 12:19:00

Mason
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From: Delaware
Registered: 2018-09-26
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Re: [MrVM] NC Possible IPv6 issues?

Still no dice for me. Even tried reinstalling a different OS (Ubuntu 16.04).

No IPv6 connectivity within the VM --

# ping6 ipv6.google.com
PING ipv6.google.com(yx-in-x65.1e100.net) 56 data bytes
From yx-in-x65.1e100.net icmp_seq=3 Destination unreachable: Address unreachable
From yx-in-x65.1e100.net icmp_seq=4 Destination unreachable: Address unreachable
From yx-in-x65.1e100.net icmp_seq=5 Destination unreachable: Address unreachable

mtr looks like it's reaching the node, but not being routed to the VM --

                                                           Packets               Pings
 Host                                                    Loss%   Snt   Last   Avg  Best  Wrst StDev
...
...(omitted)...
...
10. dct-cr01-v-51.dacentec.com                            0.0%   195   37.2  37.1  35.6  48.0   2.1
11. 2607:5600::c7ff:9c81                                  0.0%   195   51.1  49.7  35.7  74.8   7.0
12. 2607:5600::c0ff:9f15                                  0.5%   195   36.4  36.9  35.6 107.2   6.1
13. 2607:5600::175c:dc9a                                  0.0%   195   36.2  36.5  35.9  61.9   1.9
14. ???

Last edited by Mason (2018-09-27 12:20:03)

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#5 2018-09-28 07:00:04

mikho
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Re: [MrVM] NC Possible IPv6 issues?

I guess you can ping6 2607:5600:008e:0000::1 ?

That is the gateway and I can ping that from node/container but nothing beyound that.
I've opened a ticket with Dacentec about this.

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#6 2018-09-28 18:17:18

mikho
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Re: [MrVM] NC Possible IPv6 issues?

This is a starnge issue, either I can ping from one/two containers or the node itself.

Looking into the configuration as this is the only node (out of 3) in Lenoir having this issue.

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#7 2018-09-30 22:17:43

Mason
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From: Delaware
Registered: 2018-09-26
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Re: [MrVM] NC Possible IPv6 issues?

Negative on the ping6 to 2607:5600:008e:0000::1, still getting "Destination unreachable: no route".

Let me know if you'd like me to test again.

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#8 2018-10-01 06:52:41

mikho
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From: Hell and gore == Sweden
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Re: [MrVM] NC Possible IPv6 issues?

First of all, let me say I'm sorry but I never got around to look at it this weekend....


And second, this is kinda awkward.   
Somehow there were two identical default routes with the same metric. One using the gateway as next hop, one leading nowhere.

I've ping6 ipv6.google.com from the node and a container now.

COuld you please confirm.

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#9 2018-10-01 11:29:25

Mason
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From: Delaware
Registered: 2018-09-26
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Re: [MrVM] NC Possible IPv6 issues?

No worries, mikho!

All is good now. Able to ping ipv6.google.com and can SSH in over v6 smile

Thanks for the taking a look into this!

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#10 2018-10-03 03:51:27

WSS
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Registered: 2016-12-22
Posts: 409

Re: [MrVM] NC Possible IPv6 issues?

lol dacentec.   Guess LES is one way to use some of their garbage hardware.

FWIW, the Opteron garbage machines play nicely with Debian 9.  I briefly thought of using one of the 5150 Xeons w/ the 60G SSD for boot and 2x500 for similar OVZ LE* services, but the last thing I want to do is more work.


RbyeR4Nm.png

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#11 2018-10-03 12:04:48

Mason
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From: Delaware
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Re: [MrVM] NC Possible IPv6 issues?

WSS wrote:

...but the last thing I want to do is more work.

Guess you're not up to the same masochist caliber as mikho and company tongue

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#12 2018-10-03 12:11:28

mikho
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From: Hell and gore == Sweden
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Re: [MrVM] NC Possible IPv6 issues?

I will probably upgrade the ram on the NC location, starting to swap and it is increasing the load.

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#13 2018-10-29 18:25:36

Mason
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From: Delaware
Registered: 2018-09-26
Posts: 8
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Re: [MrVM] NC Possible IPv6 issues?

Lenoir is back at it again with the v6 issues.

Edit:

Whoops!!! Just saw - https://forum.lowendspirit.com/viewtopic.php?id=4015. Guess that it's related. Sorry to beat the dead horse.

Last edited by Mason (2018-10-29 18:28:06)

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#14 2018-10-29 19:41:50

mikho
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From: Hell and gore == Sweden
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Re: [MrVM] NC Possible IPv6 issues?

Mason wrote:

Lenoir is back at it again with the v6 issues.

Edit:

Whoops!!! Just saw - https://forum.lowendspirit.com/viewtopic.php?id=4015. Guess that it's related. Sorry to beat the dead horse.

 
In the middle of dinner, will check right after.
I thought I fixed that issue?!

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#15 2018-10-29 20:21:53

Tsuyo
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Registered: 2015-07-19
Posts: 3

Re: [MrVM] NC Possible IPv6 issues?

mikho wrote:
Mason wrote:

Lenoir is back at it again with the v6 issues.

Edit:

Whoops!!! Just saw - https://forum.lowendspirit.com/viewtopic.php?id=4015. Guess that it's related. Sorry to beat the dead horse.

 
In the middle of dinner, will check right after.
I thought I fixed that issue?!

No, Mason is right. The reboot of the Lenoir node caused the IPv6 connectivity to go down once more again.

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#16 2018-10-29 20:23:47

mikho
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From: Hell and gore == Sweden
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Posts: 1,622
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Re: [MrVM] NC Possible IPv6 issues?

Tsuyo wrote:
mikho wrote:

 
In the middle of dinner, will check right after.
I thought I fixed that issue?!

No, Mason is right. The reboot of the Lenoir node caused the IPv6 connectivity to go down once more again.

 
What I ment was that I thought I fixed the ”ipv6 crash on reboot” issue.
Apparently not sad

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#17 2018-10-30 10:23:55

mikho
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From: Hell and gore == Sweden
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Re: [MrVM] NC Possible IPv6 issues?

It is working again.

This is a really strange issue.

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#18 2018-10-30 12:58:00

Mason
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From: Delaware
Registered: 2018-09-26
Posts: 8
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Re: [MrVM] NC Possible IPv6 issues?

mikho wrote:

It is working again.

♥♥♥

Thank you!

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#19 2018-10-30 14:21:16

Tsuyo
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Registered: 2015-07-19
Posts: 3

Re: [MrVM] NC Possible IPv6 issues?

mikho wrote:

It is working again.

This is a really strange issue.

Yes, it is indeed working now. Thanks for your help.

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