[CentOS-mirror] Failing IPv6 Mirror

Wed Apr 5 14:12:16 UTC 2017
Anssi Johansson <avij at centosproject.org>

5.4.2017, 15.41, Adam Ring kirjoitti:
> On Tue, Apr 4, 2017 at 4:01 PM, Anssi Johansson <avij at centosproject.org
> <mailto:avij at centosproject.org>> wrote:
>     How is it failing? It seems to work OK from here at least now.
> It is simply timing while trying to sync from my mirror. Running this
> test, produces:
> rsync -azqH [2001:49f0:d071:1::4]::CentOS/timestamp.txt /tmp/
> rsync: failed to connect to 2001:49f0:d071:1::4 (2001:49f0:d071:1::4):
> Connection timed out (110)
> rsync error: error in socket IO (code 10) at clientserver.c(122)
> [Receiver=3.0.9]
> I just tried it now, and it is still failing. My v6 address
> is: 2001:18b0:ffff:31f1::9 and I am able to sync from other IPv6 hosts
> it just seems like, for me at least, this host is not reachable. It also
> doesn't respond to ping attempts from my host.

As Fabian said, this is likely a routing issue. I can ping6 both your 
IPv6 address and that msync IPv6 address fine from nine different 
networks from around the world. Asking from whoever provides your 
internet connectivity would be the best way forward in this situation. 
For comparison, here's a working traceroute and ping from one of my servers:

$ traceroute6 2001:49f0:d071:1::4 -A -q1
traceroute to 2001:49f0:d071:1::4 (2001:49f0:d071:1::4), 30 hops max, 80 
byte packets
  1  2600:3c01::8678:acff:fe0d:79c1 (2600:3c01::8678:acff:fe0d:79c1) 
[AS63949]  0.781 ms
  2  *
  3  2600:3c01:3333:5::1 (2600:3c01:3333:5::1) [AS63949]  0.856 ms
  4  be2095.ccr22.sjc01.atlas.cogentco.com (2001:550:0:1000::9a36:389) 
[AS174]  2.431 ms
  5  be3178.ccr21.sfo01.atlas.cogentco.com (2001:550:0:1000::9a36:2b45) 
[AS174]  3.331 ms
  6  be3110.ccr21.slc01.atlas.cogentco.com (2001:550:0:1000::9a36:2c8e) 
[AS174]  18.797 ms
  7  be3038.ccr22.den01.atlas.cogentco.com (2001:550:0:1000::9a36:2a62) 
[AS174]  28.775 ms
  8  *
  9  2001:550:2:2a::6a:2 (2001:550:2:2a::6a:2) [AS174]  29.741 ms
10  2001:49f0:d071:1::4 (2001:49f0:d071:1::4) [AS30058]  29.297 ms !X

$ ping6 -c3 2001:49f0:d071:1::4
PING 2001:49f0:d071:1::4(2001:49f0:d071:1::4) 56 data bytes
64 bytes from 2001:49f0:d071:1::4: icmp_seq=1 ttl=55 time=29.2 ms
64 bytes from 2001:49f0:d071:1::4: icmp_seq=2 ttl=55 time=29.3 ms
64 bytes from 2001:49f0:d071:1::4: icmp_seq=3 ttl=55 time=29.3 ms

--- 2001:49f0:d071:1::4 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2032ms
rtt min/avg/max/mdev = 29.271/29.294/29.310/0.140 ms