Hello Swinog members,
There is apparently an MTU issue with SwissPost website when MTU of the link
is <1500 bytes. It is like if webserver answers everytime with 1500 bytes
packets and doesn't make PMTUD.
The client connexion is over 6in4 with 1480 bytes MTU. No issues with other
IPv6 enabled sites.
Can another person with <1500MTU connexion confirm the same behaviour, and
maybe anyone from Swiss Post IT take a look at this probable ICMP filtering
issue.
Below are the tests done:
jacota@cactus:~$ curl -6 http://www.post.ch/
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved <a href="https://www.post.ch/">here</a>.</p>
</body></html>
==> small packet <1480bytes ==> OK
jacota@cactus:~$ curl -6 https://www.post.ch/
no answer
==> SSL negociation with full packets ==> FAIL
jacota@cactus:~$ telnet -6 www.post.ch 443
Trying 2a00:17c8:0:103::20a...
Connected to www.post.ch.
Escape character is '^]'.
==> TCP connectivity with port 443 ==>OK
Best regards,
Antoine Jacot-Descombes
Hi there
Does anybody know?
Is there a known issue with centro grande dsl router and PPTP VPN over swisscom net? We have several customers that can’t establish a connection any more - since about 2 or 3 weeks.
Thanks for some help
Daniel Borer
I published a script that was laying around in my private repository for
few years already. I think it may be useful for some folks here:
https://github.com/ssinyagin/multicast_channel_switch_test
--
Stanislav Sinyagin
Senior Consultant, CCIE #5478
ssinyagin(a)k-open.com
+41 79 407 0224
hi, I didn't really dig through. Just indicating that your email ended up
in spam :)
On Thu, Dec 10, 2015 at 11:33 AM, Per Jessen <per.jessen(a)enidan.com> wrote:
> Stanislav Sinyagin wrote:
>
>> your email ended up in my spam folder, and I'm using google mail. So, it
>> looks like something is wrong with your sender host.
>>
>> Here's what I found in email headers:
>>
>> X-I7-Spam-score: -2.6
>>
>
> Hi Stanislav
>
> Unless I've completely misread it, it seems my mail got -2.6 points, can't
> be that bad :-)
>
> Anyway, I'm not the one with a problem, it's UPC customer, a friend of
> mine.
>
>
> /Per
>
--
Stanislav Sinyagin
Senior Consultant, CCIE #5478
ssinyagin(a)k-open.com
+41 79 407 0224
Does anyone @UPC happen to know what this means:
host mx.hispeed.ch [213.46.255.2]: 552 5.2.0 rl4b1r00p3kCCMl01l4bgK
automated process detected unsolicited content
The email is being sent from a UPC connection, via Hostpoint
(mail.hostpoint.ch) to a user @swissonline.ch.
The user has tried getting an explanation from UPC, but sofar no luck.
--
Per Jessen, Zürich (2.8°C)
Hi Swinog members,
Anyone know the fiber/POP installations in the Engadin area, near Scuol /
Ftan?
I'm looking for a way to get temporary internet up there for an event next
year, basic requirements, something close to FTTH, with a possibility of
1Gbit internet transit. If I can find a location in the area, i'll be able
to backhaul wireless'ly
Any ideas, contact welcome
Mfg
Darragh
