Wolf480pl
@wolf480pl.mstdn.io.ap.brid.gy
Sysadmin stuck with k8s,
Linux nerd
Likes The Unix Way
🇬🇧🇵🇱(🇯🇵 a bit)
🌉 bridged from ⁂ https://mstdn.io/@wolf480pl, follow @ap.brid.gy to interact
Linux nerd
Likes The Unix Way
🇬🇧🇵🇱(🇯🇵 a bit)
🌉 bridged from ⁂ https://mstdn.io/@wolf480pl, follow @ap.brid.gy to interact
changing hostnames after using them for 3+ months is hard...
January 18, 2026 at 4:52 PM
changing hostnames after using them for 3+ months is hard...
[nonsense]
Some people are just born with CAP_NET_BIND and live through most of their life without realizing others can't bind ports below 1024
Some people are just born with CAP_NET_BIND and live through most of their life without realizing others can't bind ports below 1024
January 17, 2026 at 12:49 AM
[nonsense]
Some people are just born with CAP_NET_BIND and live through most of their life without realizing others can't bind ports below 1024
Some people are just born with CAP_NET_BIND and live through most of their life without realizing others can't bind ports below 1024
half of my kingdom for a configuration management tool that:
- is a real programming language (jinja with extras doesn't count as a real prigramming language)
- does not make backwards-incompatible changes
- does not have move-fast-and-break-API dependencies (so anything installed with pip is […]
- is a real programming language (jinja with extras doesn't count as a real prigramming language)
- does not make backwards-incompatible changes
- does not have move-fast-and-break-API dependencies (so anything installed with pip is […]
Original post on mstdn.io
mstdn.io
January 16, 2026 at 1:26 PM
half of my kingdom for a configuration management tool that:
- is a real programming language (jinja with extras doesn't count as a real prigramming language)
- does not make backwards-incompatible changes
- does not have move-fast-and-break-API dependencies (so anything installed with pip is […]
- is a real programming language (jinja with extras doesn't count as a real prigramming language)
- does not make backwards-incompatible changes
- does not have move-fast-and-break-API dependencies (so anything installed with pip is […]
Ansible: invents a convoluted system of templating and control flow that just barely qualifies as a programming language, but actually programming in it is very painful
me: finds a cool trick that makes it possible to dynamically create dicts in a readable and non-painful way
Ansible: breaks […]
me: finds a cool trick that makes it possible to dynamically create dicts in a readable and non-painful way
Ansible: breaks […]
Original post on mstdn.io
mstdn.io
January 15, 2026 at 11:01 PM
Ansible: invents a convoluted system of templating and control flow that just barely qualifies as a programming language, but actually programming in it is very painful
me: finds a cool trick that makes it possible to dynamically create dicts in a readable and non-painful way
Ansible: breaks […]
me: finds a cool trick that makes it possible to dynamically create dicts in a readable and non-painful way
Ansible: breaks […]
The sudden urge to implement DisplayPort on an FPGA, just to see if I understand it correctly.
Fortunately I don't have an FPGA capable of it.
Fortunately I don't have an FPGA capable of it.
January 14, 2026 at 11:01 PM
The sudden urge to implement DisplayPort on an FPGA, just to see if I understand it correctly.
Fortunately I don't have an FPGA capable of it.
Fortunately I don't have an FPGA capable of it.
Hm... I wonder what a modern monitor is going to do if you try sending it a resolution it supports but with shorter blanking intervals...
January 14, 2026 at 7:54 PM
Hm... I wonder what a modern monitor is going to do if you try sending it a resolution it supports but with shorter blanking intervals...
TIL DIsplayPort MST is circuit-switched
January 14, 2026 at 7:38 PM
TIL DIsplayPort MST is circuit-switched
what the hell did I just find:
https://astria-porta.net/
Apparently there's an open-source reimplementation of Second Life called OpenSimulator
which has existed since 2007
has some form of cross server roaming / interconnect which could classify as a metaverse
and one of the interconnect […]
https://astria-porta.net/
Apparently there's an open-source reimplementation of Second Life called OpenSimulator
which has existed since 2007
has some form of cross server roaming / interconnect which could classify as a metaverse
and one of the interconnect […]
Original post on mstdn.io
mstdn.io
January 11, 2026 at 12:23 AM
what the hell did I just find:
https://astria-porta.net/
Apparently there's an open-source reimplementation of Second Life called OpenSimulator
which has existed since 2007
has some form of cross server roaming / interconnect which could classify as a metaverse
and one of the interconnect […]
https://astria-porta.net/
Apparently there's an open-source reimplementation of Second Life called OpenSimulator
which has existed since 2007
has some form of cross server roaming / interconnect which could classify as a metaverse
and one of the interconnect […]
wiring ethernet sockets without a punch-down tool is a pain the first few times...
January 9, 2026 at 11:13 PM
wiring ethernet sockets without a punch-down tool is a pain the first few times...
Reposted by Wolf480pl
> When Linux was created, 4KB pages and a single page table called `swapper_pg_dir` with 1024 entries was used, covering 4MB which coincided with the fact that Torvald’s first computer had 4MB of physical memory.
— https://docs.kernel.org/mm/page_tables.html
— https://docs.kernel.org/mm/page_tables.html
Page Tables — The Linux Kernel documentation
docs.kernel.org
January 8, 2026 at 5:44 PM
> When Linux was created, 4KB pages and a single page table called `swapper_pg_dir` with 1024 entries was used, covering 4MB which coincided with the fact that Torvald’s first computer had 4MB of physical memory.
— https://docs.kernel.org/mm/page_tables.html
— https://docs.kernel.org/mm/page_tables.html
Do friends let friends buy cat.5e patchcords in 2026?
January 6, 2026 at 6:43 PM
Do friends let friends buy cat.5e patchcords in 2026?
Happy Three Kings Day!
January 6, 2026 at 10:02 AM
Happy Three Kings Day!
Vademecum Teleinformatyka, wydawnictwa IDG:
"payload", "callbacki"
również Vademecum Teleinformatyka:
"krotnica"
"payload", "callbacki"
również Vademecum Teleinformatyka:
"krotnica"
January 1, 2026 at 4:15 PM
Vademecum Teleinformatyka, wydawnictwa IDG:
"payload", "callbacki"
również Vademecum Teleinformatyka:
"krotnica"
"payload", "callbacki"
również Vademecum Teleinformatyka:
"krotnica"
[cursed, financial instruments]
you've heard of sticker exchange, now prepare for
sticker put options: you pay someone to be able to, in the future, put a sticker of your choice on their laptop
you've heard of sticker exchange, now prepare for
sticker put options: you pay someone to be able to, in the future, put a sticker of your choice on their laptop
December 28, 2025 at 7:14 PM
[cursed, financial instruments]
you've heard of sticker exchange, now prepare for
sticker put options: you pay someone to be able to, in the future, put a sticker of your choice on their laptop
you've heard of sticker exchange, now prepare for
sticker put options: you pay someone to be able to, in the future, put a sticker of your choice on their laptop
congress can be overwhelming when just watching livestreams, can't imagine how much more overwhelming it's be in person...
December 28, 2025 at 7:10 PM
congress can be overwhelming when just watching livestreams, can't imagine how much more overwhelming it's be in person...
#isdn adjecent noob question:
The PDH (T1/E1 and stuff) had this problem that each sender had independent clock, which could be slightly faster or slightly slower than the mux, so after some time it may not have sent the next portion of bits when the mux needs to fill its slot in the frame, or […]
The PDH (T1/E1 and stuff) had this problem that each sender had independent clock, which could be slightly faster or slightly slower than the mux, so after some time it may not have sent the next portion of bits when the mux needs to fill its slot in the frame, or […]
Original post on mstdn.io
mstdn.io
December 24, 2025 at 1:32 PM
#isdn adjecent noob question:
The PDH (T1/E1 and stuff) had this problem that each sender had independent clock, which could be slightly faster or slightly slower than the mux, so after some time it may not have sent the next portion of bits when the mux needs to fill its slot in the frame, or […]
The PDH (T1/E1 and stuff) had this problem that each sender had independent clock, which could be slightly faster or slightly slower than the mux, so after some time it may not have sent the next portion of bits when the mux needs to fill its slot in the frame, or […]
Merry Christmas yall!
Hope you have relaxing holidays, and lots of luck in the new year!
Hope you have relaxing holidays, and lots of luck in the new year!
December 24, 2025 at 12:20 PM
Merry Christmas yall!
Hope you have relaxing holidays, and lots of luck in the new year!
Hope you have relaxing holidays, and lots of luck in the new year!
The sudden urge to design a CPU
December 22, 2025 at 2:24 PM
The sudden urge to design a CPU
[AI, silly take]
prediction: bubble won't burst today
prediction: bubble won't burst today
December 22, 2025 at 12:23 AM
[AI, silly take]
prediction: bubble won't burst today
prediction: bubble won't burst today
Reposted by Wolf480pl
Here's the document release you were waiting for today!
The UNIX V4 tape!
https://archive.org/details/utah_unix_v4_raw
#retrocomputing
The UNIX V4 tape!
https://archive.org/details/utah_unix_v4_raw
#retrocomputing
UNIX V4 tape from University of Utah (raw) : Computer History Museum : Free Download, Borrow, and Streaming : Internet Archive
UNIX V4 tape from the University of Utah, received by Martin Newell circa June 1974 around when he modeled the Utah Teapot.This is the raw analog waveform and...
archive.org
December 19, 2025 at 10:29 PM
Here's the document release you were waiting for today!
The UNIX V4 tape!
https://archive.org/details/utah_unix_v4_raw
#retrocomputing
The UNIX V4 tape!
https://archive.org/details/utah_unix_v4_raw
#retrocomputing
I love how with point-to-point links, you don't actually need an IP address (let alone on-link prefix) assigned to the interface.
December 17, 2025 at 12:06 AM
I love how with point-to-point links, you don't actually need an IP address (let alone on-link prefix) assigned to the interface.
IPv6 has three kinds of features:
- those that the spec intended, and work
- those that the spec didn't intend, but they still work
- those that the spec intended, but either nobody implemented, or everyone blocks, so they don't work
- those that the spec intended, and work
- those that the spec didn't intend, but they still work
- those that the spec intended, but either nobody implemented, or everyone blocks, so they don't work
December 16, 2025 at 6:15 PM
IPv6 has three kinds of features:
- those that the spec intended, and work
- those that the spec didn't intend, but they still work
- those that the spec intended, but either nobody implemented, or everyone blocks, so they don't work
- those that the spec intended, and work
- those that the spec didn't intend, but they still work
- those that the spec intended, but either nobody implemented, or everyone blocks, so they don't work
What if: IPv6 XMAS packet
uses every extension header possible
if any of those have flags, those flags are all enabled
then the last NextHeader says there's another IPv6 inside, and that one is just as festive
uses every extension header possible
if any of those have flags, those flags are all enabled
then the last NextHeader says there's another IPv6 inside, and that one is just as festive
December 16, 2025 at 11:47 AM
What if: IPv6 XMAS packet
uses every extension header possible
if any of those have flags, those flags are all enabled
then the last NextHeader says there's another IPv6 inside, and that one is just as festive
uses every extension header possible
if any of those have flags, those flags are all enabled
then the last NextHeader says there's another IPv6 inside, and that one is just as festive
how do I use both ULA and proxy-NDP IPv6 addresses on the same link...
OpenWrt's odhcpd can proxy Router Advertisements and override some of the options, but it won't add extra prefixes that the upstream didn't specify :/
Do I try to use SLAAC for proxied addresses and DHCPv6 for ULA?
Or just […]
OpenWrt's odhcpd can proxy Router Advertisements and override some of the options, but it won't add extra prefixes that the upstream didn't specify :/
Do I try to use SLAAC for proxied addresses and DHCPv6 for ULA?
Or just […]
Original post on mstdn.io
mstdn.io
December 15, 2025 at 11:05 PM
how do I use both ULA and proxy-NDP IPv6 addresses on the same link...
OpenWrt's odhcpd can proxy Router Advertisements and override some of the options, but it won't add extra prefixes that the upstream didn't specify :/
Do I try to use SLAAC for proxied addresses and DHCPv6 for ULA?
Or just […]
OpenWrt's odhcpd can proxy Router Advertisements and override some of the options, but it won't add extra prefixes that the upstream didn't specify :/
Do I try to use SLAAC for proxied addresses and DHCPv6 for ULA?
Or just […]