Notices by 🇺🇦 haxadecimal 🚫👑 (brouhaha@mastodon.social)

@ryanc
Sure, until those wacky Romans screwed it up in 153 BC. Pope Gregory could have fixed it, but didn't, so he must have been in on the conspiracy. Thanks to those idiots, June=06, July=07, August=10 (octal).

@ryanc
Shouldn't we do that in August?

@ryanc But August is month 10 in octal!

@fesshole
I used to be 6' even, but now I'm only 5' 12".

@ryanc
Mind if I quote that at the top of my source files?

When I said that the Edgerouter 4 works fine, that's not quite true. I've never been able to make IPv6 work properly on it. It can talk IPv6 to the outside world, and to my internal network, but I can't get IPv6 traffic to transit it. That's with kernel IPv6 forwarding enabled, and no IPv6 firewall rules 100% permissive.
No whatever I replace the Edgerouter 4 with, I look forward to finally having IPv6. Even though my service provider unfortunately only supports IPv6 through a 6rd tunnel.
4/

I don't need it to do WiFi, as I have a commercial access point, though the BPI-R4 is capable of it with an add-on M.2 WiFi module.
Before I upgraded my upstream from DSL to fiber, I used a cheap DLink wireless router, running OpenWRT with WiFi disabled.
3/

It looks like the BananaPi BPI-R4-4G or -8G (differing RAM size) may make a good replacement, with good open source support and bandwidth headroom for even higher speed fiber. It has two SFP+ 10G/5G/2.5G/1G ports, and four 1G copper. Runs OpenWRT, which can do either "software offload" (fast path) or actual hardware offload. Needs a 60W power brick. Costs several hundred dollars.
2/

I've somewhat been wanting to replace my Ubiquiti Edgerouter 4, which is the router between my 1G fiber and my internal network. It still works fine, and does full line-rate routing, including PPPoE encapsulation and VLAN tagging. The problem is that Ubiquity stopped supporting it about three years ago. I've considered using a spare 1U Xeon server, which I believe can meet the required performance in software, but it consumes around 200W.
#BorderIPRouter
1/

@aral
The CX22 often sells outright on eBay for under USD $70.
Of course, that is the _Atari_ CX22, so it might not do what you need.
:-)

@W6KME @hellomiakoda
Just say no!
:-)

@daedalus
The point is that if something is really dangerous, you need multiple, DIFFERENT protective measures. Each of them should be made as reliable as possible. That one of the measures is a piece of software isn't inherently a bad design. But when the ONLY protective measure is just ONE piece of software, that IS inherently a bad design.

@daedalus
I'm not even sure that most people drew the right conclusion from the Therac 25 debacle.
The previous machine had a mechanical interlock.
The real Therac 25 problem wasn't that the software had a bug. ALL software has bugs. The problem was that the redundancy of the previous machine (software check AND mechanical interlock) was removed, on the absurd assumption that the software was correct. This introduced a new single point of failure the prior machine had been immune to.

@simonzerafa @thomasfuchs
I find messing around with OLD computers to be far more useful as therapy and self-care, and FAR more interesting. Especially with machines from 1980 and earlier. Give me a nice PDP-8, PDP-10, or PDP-11 any day. Or even a Data General Nova or HP 2100. I'd kill for a System/360.

@HopelessDemigod @kilroy_was_here
Mineral oil is used for heat transfer in commercial processes, but not usually for immersion cooling of electronics, though hobbyists have done it. Pricing for industrial mineral oil in bulk is under $1 per liter. The main drawback is that the viscosity of mineral oil is about 50 to 100 times higher.

@HopelessDemigod @kilroy_was_here
Novec 7300 was good for immersion cooling of electronics, and there are third-party equivalents to them. The cost was over $400 per liter. I'm told that the equivalents from other vendors are roughly half that price.

@HopelessDemigod @kilroy_was_here
The old formilatikns were PFCs and were taken off the market years ago. The more recent stuff were segregated hydrofluoroether (HFE) compounds or fluoroketones (FK), which have much lower global warming potential. 3M got out of that market, but several other companies, like Best Technologies, still make them, and offer a variety of products that can match the characteristics of specific 3M products.

@HopelessDemigod @kilroy_was_here
And of course the replacements for that are quite expensive

@ryanc
There exist not-terrible ones?

A decade ago, I had a colo rack at Hurricane Electric in Fremont CA, and was very happy with them.

@fesshole
"You're not getting my Bud Light."