Re: seasons greetings and a network question
‐‐‐ Original Message ‐‐‐ On Sunday, 20 December 2020 10:28, Peter J. Philipp wrote: > The story is, that I log time to lives (TTL) with a setsockopt() on my logging > DNS server. Whenever mail.openbsd.org sends a mail it does not ask its cache > but does a dns query every time. This is a great beacon on the Internet (at > least for me) it tells something of the dedication openbsd has for delivering > the mail from the mailing lists. > > Erm Doesn't mail.openbsd.org, alongside most other openbsd servers, originate from Theo's basement ? If so, it tells you nothing "beacon" about the state of the internet. There are many, many, many better projects out there that you can monitor if you wish to have a true "beacon" view of what's going on on the internet. Nor does it tell you anything of openbsd's dedication to anything apart from its obstinance in insisting that Theo's basement is the best place to host servers and refuse to answer questions from the community in that respect (see discussions when Theo came begging for money for electricity or whatever it was a few years back). Still, I'm sure Theo will be happy for you to blow his trumpet for him. ;-)
Re: seasons greetings and a network question
On Sun, Dec 20, 2020 at 10:49:49AM +, Laura Smith wrote: > > > ‐‐‐ Original Message ‐‐‐ > On Sunday, 20 December 2020 10:28, Peter J. Philipp wrote: > > > > The story is, that I log time to lives (TTL) with a setsockopt() on my > > logging > > DNS server. Whenever mail.openbsd.org sends a mail it does not ask its cache > > but does a dns query every time. This is a great beacon on the Internet (at > > least for me) it tells something of the dedication openbsd has for > > delivering > > the mail from the mailing lists. > > > > > > Erm > > Doesn't mail.openbsd.org, alongside most other openbsd servers, originate > from Theo's basement ? No. Assumptions etc -Otto > > If so, it tells you nothing "beacon" about the state of the internet. There > are many, many, many better projects out there that you can monitor if you > wish to have a true "beacon" view of what's going on on the internet. > > Nor does it tell you anything of openbsd's dedication to anything apart from > its obstinance in insisting that Theo's basement is the best place to host > servers and refuse to answer questions from the community in that respect > (see discussions when Theo came begging for money for electricity or whatever > it was a few years back). > > Still, I'm sure Theo will be happy for you to blow his trumpet for him. ;-) >
seasons greetings and a network question
Hi,
This is a question to the mail administrator. What happened on Friday Oct. 9th
of this year on the Internet? Now I don't want you to overly worry because I'm
just going through my logs and there is a small story to tell, and besides it
could have happened on the Internet and had no relation to openbsd's network.
The story is, that I log time to lives (TTL) with a setsockopt() on my logging
DNS server. Whenever mail.openbsd.org sends a mail it does not ask its cache
but does a dns query every time. This is a great beacon on the Internet (at
least for me) it tells something of the dedication openbsd has for delivering
the mail from the mailing lists.
I did a bit of analysing of my logs and found this:
$ grep 199.185.178.25 /var/log/delphinusdnsd | awk '{print $1 " " " " $14; }' |
sort -u | tr '\n' ' ' && echo
Dec (ttl=48, Dec (ttl=49, Dec (ttl=50, Nov (ttl=48, Nov (ttl=49, Nov
(ttl=50, Oct (ttl=43, Oct (ttl=48, Oct (ttl=49, Oct (ttl=50, Sep (ttl=48,
Sep (ttl=49, Sep (ttl=50,
As you can see the TTL's are 48, 49, and 50 when they reach my network. Except
October 9, here the TTL has a 43 with it. Here is a sample log:
Oct 9 03:19:44 parallax delphinusdnsd[29829]: request on descriptor 10 interfac
e "168.119.124.130" from 199.185.178.25 (ttl=43, region=1, tta=0.453ms) for "mai
l.centroid.eu." type=A(1) class=1, edns0, dnssecok, answering "mail.centroid.eu.
" (45/168)
It was early in the morning for me, I missed it completely because I don't
systematically search my logs. Only when I'm bored do I look through this.
The hop count increased by 5 hops, it could have been a BGP blip perhaps?
Perhaps it was maintenance on my providers network who knows, I don't know.
All I know is that according to my logs it was between 3:19:43 and 3:19:45
CEST timezone on that day, I queried both my auth nameservers for this.
Could it have been another operator on the Internet rerouting something? I
searched a little in the openbsd archives there was no maintenance announced,
it was a boring Thursday/Friday night, roughly nine days before 6.8 release
time.
Maybe it was just a network blip. But maybe OpenBSD sysadmins saw something?
Other than this funny mail, I want to wish everyone a happy solstice tomorrow,
I wish you seasons greetings and merry christmas and happy new year 2021!
Stay healthy before we beat this global pandemic!
Best Regards,
-peter
