Tickets - No IPv6 connectivity :: SixXS - IPv6 Deployment & Tunnel Broker

Ticket ID: SIXXS #14781685
Ticket Status: User

PoP: ruled01 - EDPnet N.V. (St.Petersburg)

No IPv6 connectivity

Shadow Hawkins on Wednesday, 06 January 2016 07:02:32

Tunnels T147509, T154381, T158717. Starts without error messages:

sock_getline() : "200 SixXS TIC Service on nlhaa01.sixxs.net ready (https://www.sixxs.net)"
sock_printf()  : "client TIC/draft-00 AICCU/2007.01.15-console-linux Linux/3.13.0-74-generic"
....
sock_getline() : "202 Done"
Successfully retrieved tunnel information for T147509
sock_printf()  : "QUIT Zij die gaan, groeten u"
Tunnel Information for T147509:
POP Id      : ruled01
IPv6 Local  : 2a02:578:5002:174::2/64
IPv6 Remote : 2a02:578:5002:174::1/64
Tunnel Type : ayiya
Adminstate  : enabled
Userstate   : enabled
[AYIYA-start] : Anything in Anything (draft-02)
[AYIYA-tun->tundev] : (Socket to TUN) started

But then remote tunnel endpoint cannot be pinged:

ping6 2a02:578:5002:174::1
PING 2a02:578:5002:174::1(2a02:578:5002:174::1) 56 data bytes
^C
--- 2a02:578:5002:174::1 ping statistics ---
360 packets transmitted, 0 received, 100% packet loss, time 359186ms

Problem started yesterday about 19:00MSK (partial connectivity loss) and now ipv6 connectivity lost completely.

No IPv6 connectivity

Shadow Hawkins on Wednesday, 06 January 2016 15:40:27

Roman Bazalevskiy wrote:

Starts without error messages:

I think I've met the same issue. My tunnel id is T133610. Some investigation shows me that it's something regarding time on the PoP. Roman, do you have a lot of recent "Clock off" errors in "Live tunnel status on PoP"? ( https://www.sixxs.net/home/tunnelinfo/status/?<your tunnel id> ) _My host clock is synced using NTP. And I have correct Europe/Moscow timezone from timezone-data-2015f. _ # ntpdate -u europe.pool.ntp.org 6 Jan 18:32:36 ntpdate[10484]: adjust time server 91.121.192.17 offset -0.008627 sec When IPv6 connection starts to fail I can fix it setting the clock to the past but not far away - 30-50 seconds and after restarting the aiccu IPv6 connection starts to work. After it I can sync time to correct value or not, restart aiccu or not the same - IPv6 connection works for some time (few minutes) then stops with the same symptoms. May be it's aiccu issue. I use aiccu-2007.01.15 on gentoo amd64.

No IPv6 connectivity

Shadow Hawkins on Wednesday, 06 January 2016 19:56:15

Semen Nikiforov wrote:

When IPv6 connection starts to fail I can fix it setting the clock to the past but not far away - 30-50 seconds and after restarting the aiccu IPv6 connection starts to work. After it I can sync time to correct value or not, restart aiccu or not the same - IPv6 connection works for some time (few minutes) then stops with the same symptoms.

The same, yes :( Some time ago I've got problems with out-of-sync time on PoP (TT 14227737).

No IPv6 connectivity