About neozeed

What is there to tell? I've loved UNIX like things since I was first exposed to QNX in highschool (we had the Unisys ICONS!), and spent the better time of my teenage years trying to get my own UNIX... I should have bought Coherent in retrospect.. Anyways latched onto Linux in 1992, and then got some old BSD admin books and have been hooked on the VAX BSD & other big/ancient things since...!

Research UNIX v9

v9 on TME

This just in, I have just booted Research UNIX v9 on TME’s SUN-3 emulator!

And there we are booted up and logged in.. pardon the disk error..


I’m slightly hesitant about uploading it, as it clearly isn’t right… And this is only the binary component, I have integrated the source tree onto the disk image.  But I haven’t actually tried to compile anything except a simple hello-world program.  You can download it here from sourceforge: SUN3-research_v9.7z  If anyone want’s to browse the source, it’s on my CVS browser thing.

Research UNIX v8

    v8 on SIMH

So what the heck is Research UNIX v8?  Or even what is Research UNIX?  Well a query against utzoo gave me this answer:

>I've seen people that use System V and the like refer to their Unix as
>"tenth edition" or "ninth edition", or whatever. I've always seen things as
>"System V release n", or whatever. Anyone know the difference between these
>different naming schemes ?

There are actually three designations: Versions, Editions, and
System/Releases. The proper names of the first six Unixen were
"The #th Edition". Colloquially, people called them "Version #".
The Version Sixth Edition split off several variations, one of which
became Version Seven (the Seventh Edition) and sired BSD. From
several others, System III was born, and later named System V.
Tacked onto this name were Release numbers and yes, Versions.
So you will see things line SVr3v2.

The Eighth, Ninth, and Tenth Editions seldom left Bell Labs
and are also referred to as "Research UNIX". Another system
(not UNIX) they are playing with is called "Plan 9". Every so
often, a feature, such as STREAMS, finds its way into System V.

In some ways, Research UNIX is closer to BSD than to System V.

In short, UNIX began it’s life as a research project.  Until recently versions 1-6 & 32v were available to the public.  However the later versions, 8,9,10 were not.  However thanks to the work over at TUHS it’s available for non commercial use:
Alcatel-Lucent USA Inc has permitted usage saying "will not assert its
copyright rights with respect to any non-commercial copying, distribution,
performance, display or creation of derivative works of 
Research Unix®1 Editions 8,9, and 10."

So awesome!

The version of Research v8 is split onto 2 tape images, one for the graphical terminals, and the other for the OS install onto the VAX.  The distribution is not suitable for any standalone operation, and requires a previously installed 4.1BSD machine, with a second disk to install v8 onto.  Part of the installation requires you to compile your own kernel.  I ran into a bit of problems as it’s not a 100% process, but after referencing this guide from David du Colombier, I had the system up and running.  Naturally reading the installation manual helped a great deal too.

As always there is strange artifacts left in the backup, such as this scoreboard from rogue:

Top Ten Rogueists:
Rank Score Name
1 5545 Rog-O-Matic XIII for mjs: quit on level 17.
2 5043 ken: killed on level 23 by a dragon.
3 3858 zip: killed on level 16 by an invisible stalker.
4 3249 Rog-O-Matic VII: killed on level 16 by an invisible stalker.
5 2226 Rog-O-Matic VII: killed on level 13 by a troll.
6 2172 St. Jude: killed on level 13 by a troll.
7 1660 Rog-O-Matic VII: quit on level 11.
8 1632 Chipmunk the Jello: killed on level 10 by a centaur.
9 844 Rog-O-Matic VII: quit on level 5.
10 401 Rog-O-Matic VII: killed on level 4 by a snake.

Does this mean Ken Thompson was an avid rogue fan?  Perhaps.  Naturally I quickly compiled the v100 version of aclock, and had it running.

aclock on v8

I’ll have to edit this and more and more as I find out, but I’ve been busy in real life, and of course I know that in addition to v8, there is also v9 & v10 to tackle.

As always, if you want you can download my pre-installed from my site : researchv8.7z

You will have to bring your own copy of the SIMH VAX-11/780 simulator.  As of 31/3/2017 ther is issues with the github version of SIMH, and you will have issues with the disks on the VAX.  You need to disable the async with a simple set command in your ini file:

set noasync

And you should now be good to go!  As always you’ll have to battle the 404 page for the correct link and the username & password.


Manually adding ncurses & VDE support to the Linux Qemu build

For some reason I had issues for this to automatically pick up building Qemu 2.8.0 on Ubuntu 16.10 (Which is really Debian)…

Anyways, be sure to have the needed dev components installed.  If you have a FRESH system, natrually you’ll need a lot more.

apt-get install libvdeplug-dev
apt-get install libvde-dev
apt-get install ncurses-dev

editing the file config-host.mak, I found I needed to add the following to turn on ncurses & VDE:


And lastly add in the following libs to the libs_softmmu, to ensure it’ll link

-lncurses -lvdeplug

And now I’m good!

From my notes on flags needed to run Qemu the old fashioned way:

-net none -device pcnet,mac=00:0a:21:df:df:01,netdev=qemu-lan -netdev vde,id=qemu-lan,sock=/tmp/local/

This will join it to the VDE listening in /tmp/local

Obviously I have something more interesting and more evil going on….

Python command line network speed test

Not bragging..

So you know all the old speedtest.net stuff.  They have their old flash based client, and a html5 client, but what if you are on a bare VPS, and you don’t want to install X and the gigs of desktop to run a simple bandwidth test?

Well install python, and then run this:

curl -s  https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py | python –

And away it goes!

# curl -s https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py | python –
Retrieving speedtest.net configuration…
Testing from Joe’s Datacenter (…
Retrieving speedtest.net server list…
Selecting best server based on ping…
Hosted by Packet Layer Consulting LLC (Kansas City, KS) [5.37 km]: 5.394 ms
Testing download speed……………………………………………………………………..
Download: 53.06 Mbit/s
Testing upload speed……………………………………………………………………………………….
Upload: 110.83 Mbit/s


BackOffice Server 4.5 aka how to get the best of 1990’s Microsoft Server Tech!

Stylized logo!

Every so often, I’ll get either emails or messages from various people wanting to run their own exchange server setup in a similar method that I have setup, except that they are lacking either Windows NT Server discs, or even the Exchange server disc.  I always end up pointing people to eBay, although contrary to the last few years, prices of old Exchange Server have gotten expensive.  However there is a different SKU, and way to get them both, plus a lot more, enter the late 1990’s server craze of product consolidation, Microsoft Back office.

Back Office media kit

In all version 4.5 comes on 7 CD’s containing:

  • Windows NT Server 4.0/IE 5.0/MMC 1.0
  • SQL Server 7.0
  • Proxy Server 2.0/Option Pack
  • Exchange Server 5.5
  • Site Server 1.0
  • Systems Management Server 2.0
  • SNA Server 4.0

Before server virtualization took off, the trend for small branch offices and small organizations was to get a single server and try to run everything all at once.  Of course this leads to an incredible amount of inter-tangled dependencies, and possible collisions when involving 3rd party software, along with possible performance issues for stacking so much onto one box.  How times have changed!  Where today we may run all the same services on a single physical box, however with each server component getting its own VM, it lends to far better stability as you don’t have so many applications with possible DLL/system versioning issues, and better resource management as you can easily prioritize VM’s or even suspended ones that are infrequently needed.  Having lived through it, there was nothing like having a needed service pack for one issue on one component, which then broke something else.  Needless to say this is why we have virtualization, and things like docker to deal with DLL hell.


There is no real difference between these Back office versions of the server apps, which is why I would recommend this over a standalone package as you get so much more.

SMTP along with POP and IMAP, are largely unchanged.  While Outlook 2016 may not support Exchange 5.5 directly, you can configure it as an IMAP server, and connect just fine.  I’d highly recommend something like stunnel to wrap it with modern encryption, something that Windows NT 4.0 is lacking.  Combined with an external relay to do “modern” features like DKIM, spam filtering and obscuring your server’s direct connection on the internet, there is nothing wrong with using it as a backed, even in 2017.

SQL 7 is the first version in the “rewrite” of Sybase SQL, supporting the new client libraries, which .Net 4.5 on Windows 10 can still happily connect to, unlike SQL 6.5 and below.  I use it occasionally to quickly prototype stuff as needed or load up datasets to transform them.  I also like the SQL scheduler to do jobs in steps, as it can catch error codes, and you can setup elaborate processes.

I can’t imagine having a use for SNA Server anymore as IBM had shifted all their mainframes from SNA, to TCP/IP.  I would imagine with a current software contract that is what people would be using, but somehow I’d like to imagine some large organization still using 3270’s on people’s desks, and a SNA gateway to bring sessions to people’s desks.  But that is highly unlikely.  Back in the day COM/TI was a big deal to take COBOL transactions and package them up as Microsoft COM objects to later be called either directly, or middleware via DCOM.  Although who knows, when it comes to legacy stuff, Im sure somewhere has type 1 token ring MAU’s, and SDLC links.

Packages like Back Office is what basically pushed out Novel from the market as they didn’t develop their own solutions in time, and deploying server software to Novel Netware proved to not only be very precarious, but along with it’s single application process space, proved to be extremely unreliable.  Not to mention that older protocol companies like DEC, IBM or Novel were entrenched in their own proprietary network stacks, and TCP/IP was frequently seen as something to be purchased separately both for the OS, and the application.  Microsoft certainly did the right thing by having a free TCP/IP for Windows for Workgroups, and including it in Windows NT, and Windows 95.

As always the option Pack for Windows NT 4.0 nearly brings it up to the functional level of Windows 2000, and is a great way to build that virtual corporation for testing.


Installing VMware ESXi 5.5.0 Update 3 on KVM

Well I had no luck with the boot process hanging during initialization.  I searched a little, and came across this thread, stating :

The line that says “Running inside a VM; adjusting spinout timeout to 180 seconds” would suggest that KVM implements enough of our backdoor interface to make it look like we’re running under a VMware hypervisor.  When we’re running in this environment, we use the backdoor to get the host TSC frequency.  I suspect that KVM doesn’t implement the “GETMHZ” backdoor call, so we are confused about the TSC frequency.  The 30ms delay turns into … 30 hours?  30 years?

So they had a source code change for QEMU 1.7.0, however it obviously doesn’t work in 2.x.  It was rolled up stream, and then made into a switch to disable with a simple flag to add into the command line.

-machine vmport=off

So with that set I ran the following:

kvm -vnc -cpu host \
-machine vmport=off \
-m 4096M \
-smp cpus=2 \
-drive file=esx-1.qcow2,if=ide,index=0,media=disk \
-serial telnet:,server,nowait \
-monitor tcp:,server,nowait \
-cdrom /root/VMware-VMvisor-Installer-5.5.0.update03-3116895.x86_64.iso -boot d \
-net none \
-device vmxnet3,mac=00:2e:3c:92:26:00,netdev=esx-0 \
-device vmxnet3,mac=00:2e:3c:92:26:01,netdev=esx-1 \
-device e1000,mac=00:2e:3c:92:26:02,netdev=esx-2 \
-device e1000,mac=00:2e:3c:92:26:03,netdev=esx-3 \
-netdev socket,id=esx-0,udp=,localaddr= \
-netdev socket,id=esx-1,udp=,localaddr= \
-netdev socket,id=esx-2,udp=,localaddr= \
-netdev socket,id=esx-3,udp=,localaddr=

And now I can boot up, and install VMWare!

ESXi 5.5.0 on Qemu KVM

By default you will not be permitted to start any virtual machine.  To get around this you have to enable VMWare to run nested.
Add the following to /etc/vmware/config under ESX:


And then you are good to go!

VM running on nested ESXi 5.5.0

Running VMWare ESXi 6.5 under Linux/KVM!

So with VIRL in hand, the next thing I wanted to do was play with some LACP, and VMWare ESX.  Of course the best way to do this is under KVM as you can use UDP to bounce packets around between virtual machines, like the VIRL L2 switch.  I went ahead and fired up 5.5 and got this nice purple screen of death.

Purple screen of death!

So naturally I need to force the processor type.  Also after reading a few sites, I needed to turn on a nested & ignore_msrs settings:

root@ubuntu:/etc/modprobe.d# cat qemu-system-x86.conf

options kvm_amd nested=1
options kvm ignore_msrs=1

Naturally if you are using an Intel processor the statements need to reflect that.  All being well you will see something like this in your log file:

Mar 7 11:34:38 ubuntu kernel: [ 14.802132] kvm: Nested Virtualization enabled
Mar 7 11:34:38 ubuntu kernel: [ 14.802134] kvm: Nested Paging enabled

I got a little further trying to install VMWare ESXi 5.5 update 3, however it just hangs on Intitializing timing…

vMWare 5.5.0 update 3 hanging

(I did later solve the 5.5 problem in a follow up here!)

After going nowhere with that, I went ahead and downloaded VMWare ESXi 6.5 which as of today is the latest version, and that installed just fine!

ESXi 6.5.0 running under KVM

For anyone brave or crazy enough to think about reproducing this, here is my install command line (yes Im doing this old school way on purpose)

kvm -vnc -cpu host \
-machine pc-i440fx-2.1 \
-m 4096M \
-smp cpus=2 \
-boot order=d \
-drive file=esx-1.qcow2,if=ide,index=0,media=disk \
-serial telnet:,server,nowait \
-monitor tcp:,server,nowait \
-net none \
-device vmxnet3,mac=00:2e:3c:92:26:00,netdev=esx-0 \
-device vmxnet3,mac=00:2e:3c:92:26:01,netdev=esx-1 \
-device vmxnet3,mac=00:2e:3c:92:26:02,netdev=esx-2 \
-device vmxnet3,mac=00:2e:3c:92:26:03,netdev=esx-3 \
-netdev socket,id=esx-0,udp=,localaddr= \
-netdev socket,id=esx-1,udp=,localaddr= \
-netdev socket,id=esx-2,udp=,localaddr= \
-netdev socket,id=esx-3,udp=,localaddr= \
-cdrom VMware-VMvisor-Installer-5.5.0.update03-3116895.x86_64.iso \
-boot d

As you can see it really isn’t that involved, well once you get the formatting to make some sense.  And to run it normally I run it something like this:

kvm -vnc -cpu host \
-machine pc-i440fx-2.1 \
-m 4096M \
-smp cpus=2 \
-drive file=esx-1.qcow2,if=ide,index=0,media=disk \
-serial telnet:,server,nowait \
-monitor tcp:,server,nowait \
-net none \
-device vmxnet3,mac=00:2e:3c:92:26:00,netdev=esx-0 \
-device vmxnet3,mac=00:2e:3c:92:26:01,netdev=esx-1 \
-device vmxnet3,mac=00:2e:3c:92:26:02,netdev=esx-2 \
-device vmxnet3,mac=00:2e:3c:92:26:03,netdev=esx-3 \
-netdev socket,id=esx-0,udp=,localaddr= \
-netdev socket,id=esx-1,udp=,localaddr= \
-netdev socket,id=esx-2,udp=,localaddr= \
-netdev socket,id=esx-3,udp=,localaddr=

So it’s basically the same, just no mounted CD-ROM image.  Now this is all fun, but what about networking?  As I had mentioned before, I bought a VIRL license, which includes a l2 Catalyst image, so why not use that, instad of a ‘traditional’ Linux bridge?  Sure!  In this example I’m going to connect the 4 ethernet ports from the ESXi into the first 4 ports on the cisco switch, with the last port connecting to a Linux bridge, that I then route to, as I wanted all my lab crap on a seperate network.  To start the switch I use this script:

kvm \
-m 768M \
-smp cpus=1 \
-boot order=c \
-drive file=vios_l2-adventerprisek9-m.vmdk.SSA.152-4.0.55.E.qcow2,if=ide,index=0,media=disk \
-serial telnet:,server,nowait \
-monitor tcp:,server,nowait \
-net none \
-device e1000,mac=00:2e:3c:92:26:00,netdev=gns3-0 \
-device e1000,mac=00:2e:3c:92:26:01,netdev=gns3-1 \
-device e1000,mac=00:2e:3c:92:26:02,netdev=gns3-2 \
-device e1000,mac=00:2e:3c:92:26:03,netdev=gns3-3 \
-device e1000,mac=00:2e:3c:92:26:04 \
-device e1000,mac=00:2e:3c:92:26:05 \
-device e1000,mac=00:2e:3c:92:26:06 \
-device e1000,mac=00:2e:3c:92:26:07 \
-device e1000,mac=00:2e:3c:92:26:08 \
-device e1000,mac=00:2e:3c:92:26:09 \
-device e1000,mac=00:2e:3c:92:26:0a \
-device e1000,mac=00:2e:3c:92:26:0b,netdev=gns3-tap \
-netdev socket,id=gns3-0,udp=,localaddr= \
-netdev socket,id=gns3-1,udp=,localaddr= \
-netdev socket,id=gns3-2,udp=,localaddr= \
-netdev socket,id=gns3-3,udp=,localaddr= \
-netdev tap,id=gns3-tap,ifname=tap0,script=/etc/qemu-ifup \

Now as you can see the udp sockets are inverse of eachother, meaning that the ESX listens on 10000 and sends to on port 20000, while the switch listesns on 20000, and sends packets to 10000 for the first ethernet interface pair.

By default VMware only assigns the first NIC into the first virtual switch, so after enabling CDP, we can see we have basic connecitivity:

AMD-kvm#sho run int gig0/1
Building configuration…

Current configuration : 99 bytes
interface GigabitEthernet0/1
media-type rj45
speed 1000
duplex full
no negotiation auto

AMD-kvm#show cdp neigh
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone,
D – Remote, C – CVTA, M – Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
KVMESX-1 Gig 0/0 155 S VMware ES vmnic0

Total cdp entries displayed : 1

And of course the networking actually does work… I created a quick VM, and yep, It’s online!

AMD-kvm#show mac address-table
Mac Address Table

Vlan Mac Address Type Ports
—- ———– ——– —–
1 000c.2962.09e5 DYNAMIC Gi0/0
1 002e.3c92.2600 DYNAMIC Gi0/0
1 76b0.3336.34b3 DYNAMIC Gi2/3
Total Mac Addresses for this criterion: 3

And of course some obliguttory pictures:

Nested ESXi running a simple NT 4.0 server


Welcome to IIS 2.0

With ip forwarding turned on my Ubuntu server, and an ip address assigned to my bridge interface, I can then access the NT 4.0 VM from my laptop directly.

Nex’t time to make the L2 more complicated, and add in some L3 insanity…

Getting started with cisco VIRL L2 virtual Ethernet switches

Well for the longest time there was no generally available way to emulate a cisco L2 switch. right before Dynamips was abandoned, in 0.28RC1, there was actually some work on the the Catalyst 6000 Supervisor 1 line card, although no interfaces are supported, and it was largely seen as impossible at the time.

While there may have been leaks of the internal IOU or IOS on UNIX, these are even more dubious than buying your own cisco 7200 and running that IOS on Dynamips.  Indeed in the old days you’d no doubt find people with home labs that look something like this:

My sad lab.

So yeah, I know it’s not new but it was new to me.  But yes, VIRL is something us mere mortals can buy without a CCIE on hand, or a multi-million dollar contract on hand.  Although it isn’t free, but compared to everything else cisco sells it’s cheap…

So VIRL comes in a few different flavors.  They do have an ISO to run on bare metal x86 machines, OVAs for deployment on VMWare Workstation, and ESXi (Although for player you’ll have to get VIX and the vmnet config util from workstation, as I went through here & here).

Although that’s not so much what I’m interested in.  As always I’m more interested in something that lets me run it on my own.

Downloading the l2 image

So as of today, the latest file is vios_l2-adventerprisek9-m.vmdk.SSA.152-4.0.55.E, with the MD5 checksum of 1a3a21f5697cae64bb930895b986d71e.

So as a first test, you can run the L2 image with Qemu/KVM!  I found it works better renaming vios_l2-adventerprisek9-m.vmdk.SSA.152-4.0.55.E to vios_l2-adventerprisek9-m.vmdk.SSA.152-4.0.55.E.vmdk otherwise there was some issues with Qemu picking up the image.

The command line for a switch can be a little crazy so it’ll break some of it up onto separate lines.  This way you can see that I bound a few interfaces to listen on UDP, while most of them are unbound, but you get the idea.  Naturally it being a cisco product, it drives with a serial console.

-m 768M
-smp cpus=1
-boot order=c
-drive file=vios_l2-adventerprisek9-m.vmdk.SSA.152-4.0.55.E.vmdk,if=ide,index=0,media=disk
-serial telnet:,server,nowait
-monitor tcp:,server,nowait
-net none -device e1000,mac=00:2e:3c:92:26:00
-device e1000,mac=00:2e:3c:92:26:01,netdev=gns3-1
-netdev socket,id=gns3-1,udp=,localaddr=
-device e1000,mac=00:2e:3c:92:26:02
-device e1000,mac=00:2e:3c:92:26:03
-device e1000,mac=00:2e:3c:92:26:04
-device e1000,mac=00:2e:3c:92:26:05,netdev=gns3-5
-netdev socket,id=gns3-5,udp=,localaddr=
-device e1000,mac=00:2e:3c:92:26:06 -device e1000,mac=00:2e:3c:92:26:07
-device e1000,mac=00:2e:3c:92:26:08 -device e1000,mac=00:2e:3c:92:26:09
-device e1000,mac=00:2e:3c:92:26:0a -device e1000,mac=00:2e:3c:92:26:0b

In some ways, this is very much like running Solaris on QEMU via a serial console.  Once booted up, if you grab the console you’ll see:

l2’s grub console

Now, while I think it’s interesting to play with, but I know many people don’t like to setup and run a dozen programs manually, so how do we get this to run under GNS3!

As of right now the current version is 1.5.3, so let’s step through this real quick

Version 1.5.3

First when you fire it up (by default) you’ll get the option to specify using a local server

use local server

Next you will want to check the box to add a Qemu VM

Add a Qemu VM

give it a name like adventerprisek9-m.vmdk.SSA.152-4.0.55.E… Or anything else you wish to call it.

give it a name

Next I set the emulator to qemu-system-i386.exe and give it 768MB of RAM.

set the Qemu emulator & RAM

hit next, and then it’ll prompt to select a disk image.  In this example, remember I had renamed the downloaded VIRL image to have a VMDK extension.

select the image

Then GNS3 will prompt to add it to the default images directory

add it to the images directory

After that the wizard is complete.

Then finish

However there is still a bunch of settings that still need to change.  If you don’t make these changes you’ll have a switch with a single Ethernet port, and you will only be able to deploy a single switch, so that won’t be any fun!.

Once the wizard has finished you’ll be in the Preferences.  Just hit edit, on the template we just added, or otherwise it’s under Edit->Preferences.

Hit edit

First thing is kind of cosmetic, but go ahead and set the Category to Switches, so that way it ‘flows’ nice in the UI.

set category

Next hit the Network tab, and then add some adapters.

set the adapters to something more usable like 12

I’ve set the switch to 12 adapters.  The default of 1 isn’t too useful.  Next up hit the Advanced settings tab.  Be sure to un-check the ‘Use as a linked base VM’ . This will let you deploy multiple copies.  On Windows there is some weird issue where changes are seemingly not saved, so be sure to have a config backup strategy beyond saving the config locally.

uncheck the Use as linked base VM

Great, hit OK, and now we’ve got our L2 template for GNS3!

As a bonus, I put it on Linux, and it’ll run under KVM, however if you use the cisco downloaded files, you’ll see this error while booting:

-Traceback= 1DBB7C8z 8DBFE5z 90522Ez 904F50z 904D5Dz 900F45z 901B7Bz 901B0Fz 8D7C0Dz 8D7B0Dz 887061z 8BAE73z 8B9FD7z 8B7827z 8BCCC4z 8C0587z – Process “Async write process”, CPU hog, PC 0x008D7D62

Over and over, and it’ll be generally slow.  For some reason KVM/Qemu on Linux is struggling with the VMDK.  So the solution is to simply convert it from a VMWare VMDK into a Qcow2 image with:

qemu-img convert -f vmdk -O qcow2 vios_l2-adventerprisek9-m.vmdk.SSA.152-4.0.55.E.vmdk  vios_l2-adventerprisek9-m.vmdk.SSA.152-4.0.55.E.qcow2

Now using the qcow2 file, the switch will boot up just fine!

For any reference I’m running Ubuntu 16.10

and the KVM version is:

# kvm –version

QEMU emulator version 2.6.1 (Debian 1:2.6.1+dfsg-0ubuntu5.3), Copyright (c) 2003-2008 Fabrice Bellard

FreeBSD 12 to cut support for iBCS / SYSV binaries

Cant’ say it’s that surprising, as last time I did a test with even NetBSD it broke post NetBSD 4.0.1

FreeBSD 12 Looking At Dropping SVR4 Binary Compatibility

As they say, with a little testing you can find that stuff has been broken for years without anyone complaining that loud.  I guess the lucky thing is that with the rise of fast computers, and decent virtualization and emulation we’ve been running Xenix on Qemu for nearly a decade!

It’s interesting how at one point ABI compatibility was seen as the holy grail of running everything all at once, and micro kernels were going to let us run ‘personalities’ of everything.  And we’ve now gone full IBM using hardware virtualization to run paravirtualized guest OS’s at will.  Although I still think that OS/2 2.0 had the best paravirtualized guest OS experience, the way it ran Windows seamlessly on the OS/2 desktop.