tug.ctan.org inaccessible on a specific machine

[Zdenek Wagner]

Hi all,

I tried to ping tug.ctan.org without specifying the protcol and with
IPv6 requested. This is my result:

[zw at math-gnostics ~]$ ping -c5 tug.ctan.org
PING ftp.math.utah.edu (155.101.98.136) 56(84) bytes of data.
64 bytes from ftp.math.utah.edu (155.101.98.136): icmp_seq=1 ttl=33 time=154 ms
64 bytes from ftp.math.utah.edu (155.101.98.136): icmp_seq=2 ttl=33 time=154 ms
64 bytes from ftp.math.utah.edu (155.101.98.136): icmp_seq=3 ttl=33 time=154 ms
64 bytes from ftp.math.utah.edu (155.101.98.136): icmp_seq=4 ttl=33 time=154 ms
64 bytes from ftp.math.utah.edu (155.101.98.136): icmp_seq=5 ttl=33 time=154 ms

--- ftp.math.utah.edu ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4007ms
rtt min/avg/max/mdev = 153.873/153.980/154.067/0.077 ms
[zw at math-gnostics ~]$ ping -c5 -6 tug.ctan.org
ping: tug.ctan.org: Address family for hostname not supported

So the reason for timeout must be somewhere else, not in IPv6, the
program would inform about it.

Zdeněk Wagner
http://ttsm.icpf.cas.cz/team/wagner.shtml
http://icebearsoft.euweb.cz

pá 2. 4. 2021 v 11:36 odesílatel Henri Menke via tex-live
<tex-live at tug.org> napsal:
>
> On 01/04/21, 23:17, AC wrote:
> > Well, I know it's accessible, but the problem is specific to this pair of IPs.. I can ping
> >
> > - google.com just fine from that affected machine, and
> > - tug.ctan.org from any other IPs I control (like my home computers).
> >
> > Could it be that the server is rejecting my connection (from that specific IP) due to some misconfiguration?
>
> Could it be that you are on an IPv6 only network? The domain
> tug.ctan.org only returns an IPv4 address.
>
> Nevertheless, the problem is definitely on your side.
>
> Cheers, Henri
>
> >
> > On April 1, 2021 11:02:54 PM EDT, Norbert Preining <norbert at preining.info> wrote:
> > >On Thu, 01 Apr 2021, AC wrote:
> > >> ping tug.ctan.org
> > >
> > >> - time out on the affected machine, but
> > >
> > >Nothing we can help you there. If you have root access, you can try
> > >traceroute to see where it hangs. The server is definitely accessible.
> > >
> > >Best
> > >
> > >Norbert
> > >
> > >--
> > >PREINING Norbert                              https://www.preining.info
> > >Fujitsu                 + IFMGA Guide + TU Wien + TeX Live + Debian Dev
> > >GPG: 0x860CDC13   fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13
> >