[timmytim]

I would guess it has something to do with cisco asking them to help alleviate issues with their 1.1.1.1 squatting on a bunch of devices. I tested it when it came out, and if I set my DNS to 1.1.1.1, then logged into a hotel wireless network (that I knew was running those devices), as soon as a request was made, I was logged out of the captive portal.

I would have expected 1.1.1.1 to already be blocked if anyone filters on bogon-space (or has dealt with i

Is there a database of who blocks what? I searched but didn't find a collection anywhere.

Unless we are looking at port 25 and whatnot. Yes, it is not allowing you to use a (not technically)-arbitrary port, but most would agree that the internet is better off for that.

[colechristensen]

1/8 hasn't been "bogus" since 1/2010. ( http://www.iana.org/assignments/ipv4-address-space/ipv4-addr... )

Using unallocated IPs for "internal" or bogus purposes is sketchy, continuing to use them after they are allocated is something else. Especially so nearly a decade on.

[notdonspaulding]

The wheels of technological change in the Telecom space turn very, VERY slowly.

Not upgrading equipment and configs for 10 years is nothing in the ISP world.

[crankylinuxuser]

You'd be scarily surprised just how much telecommunications runs on Perl5 ranging around the ~150GB level.

I had my stint at an ISP that worked with around 40 state level and national orgs. I saw the underbelly of how things work, and its frankly scary.

[gpvos]

Nothing wrong with Perl5 though.

[crankylinuxuser]

There is when much of the code was "write once, read never". There's more than a a few dozen MB blobs of dense perl5 code that we had no clue what it actually did, and was told not to touch it, lest many things break.

I had to end up touching one of them, because of things breaking with that subsystem and the new ticketing system that was being implemented. It had the wonderful line

     database_user = root
     database_password = [current mysql root password]

Lest to say, I no longer work there.

[TeMPOraL]

Every time I write some crap code at work, someone on HN tells a story about such horrors that I no longer feel bad. Thanks for making my day better :).

[technion]

The most referred to bogon list is Team Cymru:

https://www.team-cymru.com/bogon-reference.html

This team provide a great side service - you can setup BGP with them using an internal AS. It's one of the few ways you can get practical experience setting up BGP in the home with a third party. I'm running it right now.

[nailer]

For anyone else wondering:

> A bogon prefix is a route that should never appear in the Internet routing table. A packet routed over the public Internet (not including over VPNs or other tunnels) should never have a source address in a bogon range. These are commonly found as the source addresses of DDoS attacks.