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Not enough ip addresses for every man, woman, child, vehicle, router, printer, other device, and all the animals too, I'm guessing.
...thermostat, refrigerator, telephone (landline), telephone (wireless), wristwatch, TV, cooking appliance, light bulb, airplane seat, keychain, guitar, lawn sprinkler, the remote control that the TV weatherman holds while standing in front of the green screen, the camera pointed at them, the camera lens, the robotic pan/tilt head that the camera is mounted on, the control panel that the camera operator is using to set up the shots, the intercom panel that the camera operator is using to talk to the director (and the AD, and the TD, and the producer, and the floor manager, and the news desk...), the microphone that the weatherman is wearing, etc.
Yeah. The number of things we use in everyday life which would not have occurred to The Authors to consider as a "computing device" is mind-blowing. I seriously wouldn't be surprised if the number of addresses used just by my own company exceeds the total envelope of IPv4.
It was kind of a point of pride back when I worked at Harris that we used real world IP addresses for even the most trivial ****. Harris was early to the party, and it made life SO much easier.
One of my prized possessions is his autograph on a copy of RFC1149 (aka, IP over Pigeon).
IPoAC is, without question, my favorite RFC of all time.
And I love the fact that The Unlimited actually implemented it in real life. (And it beat the landline it was competing against in throughput, though obviously not in ping times.)
It's not so much of a concern anymore, because of NAT (Network Address Translation). In the IP Address Space world, there are a few specific network (192.168.X.X, as the prime example) which are designated as private.
It definitely is a concern, even now. IANA ran out of IPv4 address to give to regional registraties in 2011, and there are places in the world where you can't get them any more. IPv6 has been getting steadily more and more popular as a result.
There are actually large cloud companies who have used up all of the RFC 1918 space allocation (192.168/16, 10/8, etc) on their internal data center networks, to the point that they run their routers with IPv6-only addressing and require extensions to the routing protocols to allow IPv4 routes to point to IPv6 nexthop addresses.
Some say that it's fc00::/7 as per RFC4193. Others say that has been deprecated (that fc00 is reserved for future allocation) and that fd00::/8 should be used instead. Both of these spaces, however, are technically routable.
If you want truly non-routable addresses (eg: total isolation, or whatever they call NAT these days), that's fe80::/10, which is specifically called out as a link-local range in RFC4291.
Last edited by Joe Perez; Apr 18, 2018 at 03:33 PM.
If you want truly non-routable addresses (eg: total isolation, or whatever they call NAT these days), that's fe80::/10, which is specifically called out as a link-local range in RFC4291.
fc00::/7 was defined as the "site-local" prefix, but that got deprecated because people couldn't figure out how to define a "site". The same problem exists to a degree with NAT -- if your ISP has run out of globally routable addresses and thus using net-10 for services that they are providing to their customers, then you're going to run into problems if you want to use 10/8 for your own local stuff.
Link-local addresses really aren't the same thing.
So, I had a visit from Verizon today. I was expecting one engineer and maybe one manager. Instead, I had like half the local corporate office show up (20+ people), and spent four hours this morning giving them a tour of the facilities. I could tell that half of these people had never been in a machine room before. Kept having to say things like "Pay attention to what's behind you, there's 480vdc on that conductor, and it will kill you if your butt touches it."
They want to trench from the street into my building and give me 100 Gb worth of fiber. And they're paying for it.
Gents, I went ahead and got myself a TIG welder...
Looked into a bunch of entry level units and asked for advice from professionals.
Long story short, I ended up acquiring this:
Came complete with a bottle of Argon, regulator, connectors, torch, and spare tungsten electrodes.
I also bought a nifty auto darkening helmet.
It is a pretty impressive machine - I can even stick weld with it if I need to.
Can weld aluminum, stainless, unobtanium, sheets of cardboard and ice.
Got my first "crash course" from the owner of the shop my car currently resides in for my turbo manifold, DP, exhaust and other related fab work.
He showed me some pretty neat tricks and tips.
I will be signing up for certification courses offered by Oerlikon and attend whatever training program I can get a hold of.
Successfully completed my first joining task, welding two pieces of 3" stainless exhaust pieces, and it was very satisfying.
I mean, I get it from a business perspective. We use Comcast and AT&T for all of our fiber stuff now. The company is in the process of migrating from AT&T to Verizon for all of our cell phones, so Verizon needs to come in and install repeaters, as this place is built like a bomb shelter. (Serious, if North Korea starts tossing nukes at the midwest, WGN is where you want to be.)
When AT&T did this about 6 years ago, they just piggybacked onto an existing data circuit. Verizon doesn't have an existing circuit into our building, so they need to pull in a new fiber. They're doing this on their dime (we buy a LOT of cellular service) and they probably have a good estimate of how much landline bandwidth we use in total, so I guess it makes sense for them to just go ahead and pull in the biggest circuit they can, so that a year from now they can say "Hey, you need a 10 gig dedicated connection to some random location in Indiana? As you may know, we already have more than sufficient capacity in your building, so it'll cost you nothing to set up."
Originally Posted by Godless Commie
Gents, I went ahead and got myself a TIG welder...
Nice.
Originally Posted by bahurd
Will there be a sealed room with people going in and out from time to time?
Haha. No, we finished the asbestos mitigation last year.
That process did, in fact, look like the scene from ET. Lots of plastic sheeting, lots of air ducting, and men in bunny suits coming and going constantly.
This will just be a couple of work crews with one of those cool horizontal drill trucks.
That brings back memories. I basically rewired our lathe and plaster 1925 home that way. Same for the home audio and security system. Found all the absurd lumber nailed into to bizarre places. Also found out the second floor burned at one point and learned "clean up" did not include all the ashes.
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