What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

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yamanoku @yamanoku@hollo.yamanoku.net
Public

日本発 世界の障害者の生き方を変える“自立生活革命”とは | NHK | WEB特集 | 厚生労働省

https://www3.nhk.or.jp/news/html/20250425/k10014787631000.html

日本発 世界の障害者の生き方を変える“自立生活革命”とは | NHK | WEB特集

【NHK】日本の国際協力によって世界の障害者の暮らしが変わりつつあるのをご存じでしょうか。世界20か国以上の障害当事者たちが日本で…

www3.nhk.or.jp · NHKニュース

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Asahi Lina (朝日リナ) // nullptr::live @lina@vt.social
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I just discovered something really subtle about WireGuard... TL;DR if you are adjusting interface MTUs precisely, and you have mismatched MTUs between peers in some cases, make sure your smallest MTU is always a multiple of 16!

WireGuard header overhead is said to be 32 bytes + UDP + IP, so 80 bytes for IPv6 and 60 bytes for IPv4. That's where you get the default MTU of 1420 (1500 - 80, so it works with IPv6).

But that's not precisely true! Actually, WireGuard will add up to 15 bytes of padding to the data, to make it a multiple of 16, as long as it doesn't exceed the MTU on that side of the connection.

So let's say you have a server with the MTU set at 1440, but you also have a client that is using IPv4 over PPPoE. So you set its MTU to 1432, subtracting the PPPoE overhead of 8 bytes. That should be fine, since the client will figure out the right path MTU for any connections, right?

Wrong!

The TCP client and server will negotiate an MSS that gives 1432 byte IP packets within the tunnel. But 1432 is not a multiple of 16! However, the client WireGuard instance knows that there is no headroom, so it will send 1432 + 60 = 1492 byte packets, which is the maximum PPPoE MTU. But on the way back, the server thinks it can go up to 1440! 1432 % 16 == 8, so it will try to round up to 1440. Then, it sends 1500 byte packets, which don't fit in PPPoE!

The fix is to either set both the client and server MTU to 1432, or to round down the client MTU to 1424.

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nogajun🍉 @nogajun@mastodon.social
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Commodore OS 3.0がリリースされた。というかMX Linuxのフォークでただの なんですけど。Commodore64xというCommodore64の筐体に入ったPCを販売している会社があって、それ向けに作ったものらしい。配布サイズが35GBってディスクイメージなのか?

Commodore OS Vision: commodoreos.net/CommodoreOS.as

Commodore OS Vision

About Commodore OS

www.commodoreos.net

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小嶋 裕一 @mutevox@threads.net
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Shared by GENKI

>神田氏は配偶者や自分も発達障害傾向が見られ、娘もギフテッドであるということをネット上で語っているのだが、この中の誰も医師の診断を受けていない。発達障害の人に見られる傾向というのは定型の人にも見られることがあるもので、それがあるからといって発達障害であると医師でないものが診断できるものではなく、自己診断で発達障害であると思っていた人が実際に診断を受けると違っていたということも普通にあるのである
https://bunkaonline.jp/archives/6779

神田裕子著『職場の「困った人」をうまく動かす心理術』を読んでみた：ロマン優光連載338

338回　神田裕子著『職場の「困った人」をうまく動かす心理術』を読んでみた先週の今頃にX上で話題になっていた神田裕子氏の『職場の「困った人」をうまく動かす心理術』（三笠書房）。実際に出版される前から、表紙のイラストや公開された見出し、オビの...

bunkaonline.jp · 実話BUNKAオンライン

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Mastodon Migration @mastodonmigration@mastodon.online
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As a regular critic of the "decentralized" baloney, been trying not to pile on as yesterday's near total outage makes it clear that it is not, however there is one aspect of the reporting that is confounding.

Supposedly, the outage was due to a DDOS attack on the company's PDSs, and the few users running their own PDSs were not affected. (techcrunch.com/2025/04/24/wait). Does this make any sense?

1/

Wait, how did a decentralized service like Bluesky go down? | TechCrunch

It turns out that decentralized social networks can go down, too. On Thursday evening, the decentralized social network Bluesky experienced a significant

techcrunch.com · TechCrunch

Link author: Sarah Perez 💙@Sarahp@mastodon.social

Mastodon Migration @mastodonmigration@mastodon.online
Public
Shared by Ch. :animal_feed_trickcal:

Apparently has one centralized service, the "relay", which did not go down, but it has distributed its users across multiple PDSs (and users can roll their own PDS). The idea is that any individual PDS can go down and so long as the relay keeps working all the other users are OK.

But, ALL of the company's PDSs went down. 🤔

We are being told that a DDOS attack targeted ALL of 's PDSs and they all went down simultaneously. Suppose this is possible, but it does seem odd.

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은열쇠🥨 :ivory_boost: @Silverkey027@mastodon.social
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관세 폭풍 속 홀로 선방한 해즈브로

해즈브로는 ‘위저즈 오브 더 코스트’ 부문 덕에 1분기 호실적을 기록하고 관세 리스크에도 연간 가이던스를 유지했다. fortunekorea.co.kr/news/articl

관세 폭풍 속 홀로 선방한 해즈브로

Sydney Lake & 김나윤 기자 · 장난감 산업이 도널드 트럼프 대통령의 관세 공세를 앞두고 잇따라 실적 전망을 하향 조정하는 가운데, 해즈브로는 자신만만한 태도를 유지하며 2025년 1분기 호실적을 발표했다.플레이도, 모노폴리, 너프, 던전앤드래곤(D&D) 등의 브랜드로 유명한 해즈브로는 2025년 1분기 매출이 전년 동기 대비 17% 증가했다. 주당순이익(EPS)도 시장 예상치 0.67달러를 웃도는 1.04달러를 기록했다. 실적을 견인한 건 디지털·보드게임을 제작하는 ‘위저즈 오브 더 코스트(Wizards of the Coast)’ 부문이다. 해당 부문 매출은 1

www.fortunekorea.co.kr · 포춘코리아 디지털 뉴스

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